MimbleWimble
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MimbleWimble

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Jan 7, 2025 02:30 PM
Published
Nov 6, 2022 02:57 AM
Created Date
Mar 1, 2019
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ํ‚ค์›Œ๋“œ
(190613) ์ตœ๊ทผ FlyClient ์ ์šฉ์ค‘. ์•„๋ž˜ ์ฒซ๋ฒˆ์งธ ํŽ˜์ด์ง€์ค‘ FlyClient ์ฐธ๊ณ .
MimbleWimble์„ ์œ„ํ•œ Pre-knowledge
ย 
๋„คํŠธ์›Œํฌ ๋ฐ data structure ์ค‘์‹ฌ์œผ๋กœ ๋ณด์•˜์Œ(cut-through, pruning, dandelion)

MimbleWimble ํŠน์ง•

  • ๋น„ํŠธ์ฝ”์ธ ์ต๋ช…์„ฑ, ํ™•์žฅ์„ฑ์„ ์œ„ํ•œ ํ”„๋กœํ† ์ฝœ
  • ๊ตฌํ˜„์ฒด : Grin, Beam
  • ๋‹จ์ˆœ์ง€๋ถˆ์— ์ ํ•ฉํ•œ ๊ตฌ์กฐ
  • ํ”„๋ผ์ด๋ฒ„์‹œ : ์ฃผ์†Œ์ œ๊ฑฐ ๋ฐ ๊ฑฐ๋ž˜ ๊ธˆ์•ก, ์ž”์•ก ๋น„๊ณต๊ฐœ
  • ๋™ํ˜• ํŠน์„ฑ : ์ž…์ถœ๋ ฅ๊ฐ’์„ ๋ชฐ๋ผ๋„ ์ž”์•ก ์ •์ƒ ํ™•์ธ ๊ฐ€๋Šฅ
  • ECC(ํƒ€์›๊ณก์„ ์•”ํ˜ธ)๋งŒ ์‚ฌ์šฉ
    • โ†’ ์˜ค๋žœ์‹œ๊ฐ„ ์—ฐ๊ตฌ๋˜์–ด์˜จ ๊ฐ•๋ ฅํ•œ ์•”ํ˜ธ๊ธฐ์ˆ , ๋น„๊ต์ ์•ˆ์ „ํ•จ (์ด์‚ฐ๋กœ๊ทธ๋ฌธ์ œ, ํ•ด์‹œํ•จ์ˆ˜)
  • ํ•ด์‹œํ•จ์ˆ˜๋ฅผ cryptographic commitments์˜ ์ถœ๋ ฅ ์ƒ์„ฑ์— ์‚ฌ์šฉ
  • PoW์—๋Š” Cuckoo Cycle(Grin)๊ณผ Equihash(Beam)์‚ฌ์šฉ
  • private key ๋ณด์œ ์ž๋งŒ commitments ์ถœ๋ ฅ ๊ฐ€๋Šฅ
  • ํŠธ๋žœ์žญ์…˜ ์ˆ˜๋ฅผ ๊ณต๊ฐœํ•˜์ง€ ์•Š๊ณ  ์ž”์•ก์ด ์•”ํ˜ธ commitmentsํ˜•ํƒœ๋กœ ์ €์žฅ
  • ์•”ํ˜ธ commitment ๋ฐ ๋ฒ”์œ„์ฆ๋ช…๋งŒ ์˜จ์ฒด์ธ์— ์ €์žฅ
  • Coin join์ด ์ž๋™์œผ๋กœ ๋˜์–ด ๋น„๋Œ€ํ™” ํ˜•์‹์˜ ๋ณ‘ํ•ฉ๋œ ํŠธ๋žœ์žญ์…˜์„ ์‚ฌ์šฉ
    • ํŠธ๋žœ์žญ์…˜ ๋ณ‘ํ•ฉ (Cut-through) : ์ค‘๊ฐ„์ถœ๋ ฅ์„ ์™„์ „ํžˆ ์ œ๊ฑฐํ•˜๊ณ , ์ค‘๊ฐ„์˜ ํŠธ๋žœ์žญ์…˜ ๊ธฐ๋ก์€ ํŠธ๋žœ์žญ์…˜ ์ปค๋„(transaction kernel)์— ์ €์žฅํ•˜์—ฌ ๋ฐ์ดํ„ฐ ํ™•์ธ ๊ฐ€๋Šฅ
    • ํŠธ๋žœ์žญ์…˜ ์ปค๋„
      • ํŠธ๋žœ์žญ์…˜ ์ž…๋ ฅ์˜ ์‹ค์ œ ์†Œ์œ ๊ถŒ ์ฆ๋ช…
      • ์ˆ˜ํ•™๊ทœ์ง์„ ์‚ฌ์šฉํ•ด ํŠธ๋žœ์žญ์…˜๋ฐ ์ „์ฒด ์ฒด์ธ์˜ ์œ ํšจ์„ฑ ๊ฒ€์‚ฌ
      โ†’ ์–ด๋–ค ์ž…๋ ฅ์ด ์–ด๋–ค ํŠธ๋žœ์žญ์…˜์— ์žˆ์—ˆ๋Š”์ง€ ์•Œ์ˆ˜ ์—†๋‹ค.(์ต๋ช…์„ฑ)
      โ†’ ๊ณ ๋Ÿ‰์˜ ๋Œ€์—ญํญ ์˜ค๋ฒ„ํ—ค๋“œ ์ œ๊ฑฐ
      โ†’ ์ƒˆ๋กœ์šด ๋…ธ๋“œ๊ฐ€ ๋น ๋ฅธ ๋™๊ธฐํ™”๊ฐ€๋Šฅ
๋ฒ”์œ„์ฆ๋ช…(range proof)
  • ์ˆซ์ž๋ฅผ ๋ฐํžˆ์ง€ ์•Š๊ณ  ๊ทธ ์ˆซ์ž๊ฐ€ ์ฃผ์–ด์ง„ ๋ฒ”์œ„ ์•ˆ์— ์žˆ๋Š”์ง€ ์ฆ๋ช…(์Œ์ˆ˜๊ฐ’ ๋ฌธ์ œ ํ•ด๊ฒฐ)
  • ๊ธฐ๋ฐ€๊ฑฐ๋ž˜ ์ถœ๋ ฅ ์ค‘ ๊ฐ€์žฅํฐ ๋ถ€๋ถ„์„ ๋‹ด๋‹น
  • ํ™”ํ๊ณต๊ธ‰์ด ์‹ฌ๊ฐํ•œ ์ธํ”Œ๋ ˆ์ด์…˜์„ ๊ฒช์ง€์•Š๋„๋กํ•จ(์Œ์˜๊ฐ’์€ ๋ชจ๋“  ํŠธ๋žœ์žญ์…˜๋งˆ๋‹ค ์ƒˆ๋กœ์šด ๋ˆ์„ ๋งŒ๋“ค์ˆ˜ ์žˆ๋‹ค)
  • Scriptless scripts
  • ์œ ํšจ์„ฑ ๊ฒ€์‚ฌ๋ฅผ ํ•˜๊ธฐ์œ„ํ•ด ์ƒˆ ๋…ธ๋“œ๊ฐ€ ๋„คํŠธ์›Œํฌ์— ์ฐธ์—ฌํ•˜๋„๋ก ๊ถŒ์žฅ
ย 

Cut-through and Pruning


Cut-through

cut-through ๋˜๊ธฐ ์ „์˜ ๋ธ”๋ก์€ ์ž…๋ ฅ๊ณผ ์ถœ๋ ฅ๋งŒ ๋‚˜ํƒ€๋‚ธ ํŠธ๋žœ์žญ์…˜์„ ํฌํ•จ
notion image
x : ์ด์ „ ๋ธ”๋ก์˜ ์ถœ๋ ฅ๊ฐ’, I : ์ž…๋ ฅ, O: ์ถœ๋ ฅ
3๊ฐœ์˜ ํŠธ๋žœ์žญ์…˜์ด ํฌํ•จ๋˜์–ด์žˆ๋‹ค. input์ด output์„ ์ฐธ์กฐํ•œ๋‹ค.
  • ์ถœ๋ ฅ๊ฐ’์ด ์ด์ „ ๋ธ”๋ก์„ ํฌํ•จ - I1(x1)
  • ํฌํ•จ๋œ ์ž…๋ ฅ๊ฐ’์„ ๋ฐ”๋กœ ์‚ฌ์šฉํ•˜๋Š” ์ถœ๋ ฅ๊ฐ’๋„ ์žˆ์Œ - I3(02)
  • ๋ชจ๋“  ํŠธ๋žœ์žญ์…˜์˜ ์ž…์ถœ๋ ฅ๊ฐ’์˜ ํ•ฉ์€ 0์ด์—ฌ์•ผํ•จ
cut-through ๋œ ๋ธ”๋ก
notion image
  • ํŠธ๋žœ์žญ์…˜ ๊ตฌ์กฐ๊ฐ€ ์ œ๊ฑฐ๋˜๊ณ , ์ž…์ถœ๋ ฅ๊ฐ’๋งŒ ๋‚จ์Œ
  • ์ž…์ถœ๋ ฅ๊ฐ’์˜ ์ˆœ์„œ๋Š” ์ค‘์š”ํ•˜์ง€ ์•Š์Œ
  • ๋ชจ๋“  ์ถœ๋ ฅ๊ฐ’์—์„œ ์ž…๋ ฅ์„ ๋บ€๊ฐ’์˜ ํ•ฉ์€ ์—ฌ์ „ํžˆ 0์œผ๋กœ ๋ณด์žฅ
ย 
์Šคํ…Œ์ดํŠธ๋Š” ์ฑ„๊ตด์— ์˜ํ•ด์„œ ๋งŒ๋“ค์–ด์ง„ ์ฝ”์ธ์˜ ์ด๋Ÿ‰, ๋ชจ๋“  UTXO, ๊ฐ ํŠธ๋žœ์žญ์…˜์˜ ํŠธ๋žœ์žญ์…˜ kernel์œผ๋กœ ์š”์•ฝ๋ ์ˆ˜ ์žˆ์Œ
ย 

Pruning

  • ์ด์ „ ๋ธ”๋ก์˜ ์ถœ๋ ฅ์ด ์†Œ๋น„๋˜๋ฉด, ํ•ด๋‹น ๋ธ”๋ก์—์„œ ์ถœ๋ ฅ์ด ์ œ๊ฑฐ๋จ
  • Merkle Mountain Range(MMR)์—์„œ๋„ leaves๋ฅผ ์ œ๊ฑฐํ•จ
MMR(merkle mountain ranges)
ย 
100,000๊ฐœ์˜ UTXO์™€ 1,000๋งŒ ๊ฐœ์˜ ํŠธ๋žœ์žญ์…˜์„ ๊ฐ€์ •ํ• ๋•Œ ,
์›์žฅ์€ ์•ฝ 130GB
  • 128GB์˜ tx data
  • 1GB์˜ tx ์ฆ๋ช… ๋ฐ์ดํ„ฐ
  • 250MB์˜ block header
ย 
์—ฌ๊ธฐ์— cut -through์™€ pruning์ด ์ ์šฉ๋˜๋ฉด,
ย 
์›์žฅ์€ ์•ฝ 1.8GB
  • 1GB์˜ tx ์ฆ๋ช…๋ฐ์ดํ„ฐ
  • 520MB์˜ UTXO
  • 250MB์˜ block header
ย 
ย 

Dandelion : ๋น„ํŠธ์ฝ”์ธ์„ ์œ„ํ•œ ๋„คํŠธ์›Œํฌ ๋ผ์šฐํŒ… ์ œ์•ˆ


MW์™€ ๋ณ„๊ฐœ์ด๋‚˜ Grin๊ณผ Beam์—์„œ ์‚ฌ์šฉํ•จ
ย 

Problem(๋‹จ์ˆœ gossip ํ”„๋กœํ† ์ฝœ ์‚ฌ์šฉ์‹œ)

  • cut- throught ์ „์— transaction์ด ์ „ํŒŒ๋˜์–ด mempool์— ์ €์žฅ๋จ.
  • ํŠธ๋žœ์žญ์…˜ ์ถ”์ ์ด ๊ฐ€๋Šฅํ•˜์—ฌ ๊ณต๊ฒฉ์ž ๋…ธ๋“œ๊ฐ€ ํŠธ๋žœ์žญ์…˜ ๊ทธ๋ž˜ํ”„๋ฅผ ์ž‘์„ฑํ•˜๊ณ  ๋ณด๋‚ธ์‚ฌ๋žŒ์˜ IP๋ฅผ ๋ฐœ๊ฒฌํ• ์ˆ˜ ์žˆ๋‹ค.(deanonymization)
Existing Solutions
  • CoinShuffle
  • ValueShuffle
๋“ฑ์ด ์žˆ์ง€๋งŒ ์™„๋ฒฝํ•˜์ง€ ์•Š๋‹ค.(๊ด€๋ จ์—†๋Š” ์‚ฌ์šฉ์ž๋ฅผ ์ฐพ์•„์•ผํ•จ)
ย 

Solution

New
Dandelion lite
19/11/19 follow up
A. dandelion ++ : ํŠธ๋žœ์žญ์…˜ ๊ทธ๋ž˜ํ”„ ์ž‘์„ฑ์„ ๋”์šฑ ์–ด๋ ต๊ฒŒ ๋งŒ๋“ฌ(๋‚œ๋…ํ™”)
notion image
๋‘ ๋‹จ๊ณ„์˜ ํŠธ๋žœ์žญ์…˜ ์ „ํŒŒ ํ”„๋กœ์„ธ์Šค
  1. stem phase
      • ํ•˜๋‚˜์˜ ๋…ธ๋“œ์— ๋žœ๋ค์œผ๋กœ broadcast, ๋˜ random์œผ๋กœ ๋‹ค๋ฅธ ๋…ธ๋“œ์—๋ณด๋ƒ„
      • ๋ชจ๋“  ํŠธ๋žœ์žญ์…˜์€ stem๋‹จ๊ณ„์—์„œ ์‹œ์ž‘ํ•˜๊ณ , ๊ฐ ๋…ธ๋“œ๋Š” ์‚ฌ์ „ ์ •์˜๋œ ํ™•๋ฅ ๋กœ stem์„ ๊ณ„์†ํ• ์ง€ fluff๋กœ ์ „ํ™˜ํ• ์ง€ ๋…๋ฆฝ์ ์œผ๋กœ ๊ฒฐ์ •ํ•œ๋‹ค.
2. fluff phase: ์ „์ฒด ๋„คํŠธ์›Œํฌ์— broadcast(๋‹ค์‹œ gossip์œผ๋กœ ๋Œ์•„๊ฐ)
ย 
๋งŒ์•ฝ stem๋‹จ๊ณ„์—์„œ ํŠธ๋žœ์žญ์…˜์ด ์˜คํ”„๋ผ์ธ๋œ ๋…ธ๋“œ๋กœ ์ „๋‹ฌ๋˜๋ฉด, ์ผ์ • ์‹œ๊ฐ„ํ›„ fluff๋‹จ๊ณ„์— ๋„๋‹ฌํ•˜์ง€ ์•Š์„์‹œ, ๋” ๋„“์€ ๋„คํŠธ์›Œํฌ๋กœ ์ž๋™์œผ๋กœ ๋ธŒ๋กœ๋“œ์บ์ŠคํŒ… ๋จ.
โ†’ ๊ณต๊ฒฉ์ž ๋…ธ๋“œ๊ฐ€ stem๋‹จ๊ณ„์—์„œ ํŠธ๋žœ์žญ์…˜ ์ฒซ ๋ฆด๋ ˆ์ด๋ฅผ ์ˆ˜์‹ ํ•  ํ™•๋ฅ ์„ ๋‚ฎ์ถ”์–ด IPํƒ์ง€๋ฅผ ์–ด๋ ต๊ฒŒ ๋งŒ๋“ ๋‹ค.
ย 
B. MW์—์„œ๋Š” stem๋‹จ๊ณ„์—์„œ ํŠธ๋žœ์žญ์…˜์„ ์ฆ‰์‹œ ๋‹จ์ผํ”ผ์–ด์— ์ „๋‹ฌํ•˜๋Š”๋Œ€์‹ , ๋‹ค๋ฅธ ํŠธ๋žœ์žญ์…˜๊ณผ ๋ณ‘ํ•ฉํ•˜๊ธฐ๋ฅผ ๊ธฐ๋‹ค๋ฆด์ˆ˜ ์žˆ๋‹ค.
  • ๊ณต์ •ํ•œ ๋…ธ๋“œ๋Š” ์œ ์‚ฌํ•œ ์ˆ˜์ˆ˜๋ฃŒ/ํฌ๊ธฐ ๋น„์œจ๋กœ๋งŒ ๋ณ‘ํ•ฉํ•ด์•ผํ•œ๋‹ค.
    • โ†’ ์ˆ˜์ˆ˜๋ฃŒ/ํฌ๊ธฐ ๋น„์œจ๊ณผ ์ƒ๊ด€์—†์ด ํ™•์‚ฐ์ด ๋œ๋‹ค๋ฉด ์‚ฌ์šฉ์ž๊ฐ€ ์ˆ˜์ˆ˜๋ฃŒ๋ฅผ ์ธ์ƒํ•  ํ•„์š”์„ฑ์„ ๋А๋ผ์ง€ ๋ชปํ•˜๊ฒŒ ๋จ.
  • ๋…ธ๋“œ๋Š” ์ˆ˜์ˆ˜๋ฃŒ๋ฅผ ๋„์šฉํ• ์ˆ˜ ์žˆ๋‹ค.(์ˆ˜์ˆ˜๋ฃŒ์—†์ด ์ž์‹ ์˜ ํŠธ๋žœ์žญ์…˜์„ ๋‹ค๋ฅธ ํŠธ๋žœ์žญ์…˜์— ๋ณ‘ํ•ฉ)
    • โ†’ ์ด๋ฅผ ๋ฐฉ์ง€ํ•  ๋ฐฉ๋ฒ•์€ ์—†์œผ๋‚˜ ์‚ฌ์šฉ์ž๊ฐ€ ์ด๋Ÿฌํ•œ ๋…ธ๋“œ๋ฅผ ๋ฐœ๊ฒฌํ•˜๊ณ  ๊ธˆ์ง€ํ• ์ˆ˜ ์žˆ์Œ.
  • ๊ณต๊ฒฉ์ž๋…ธ๋“œ๋Š” stem๋‹จ๊ณ„์˜ ํŠธ๋žœ์žญ์…˜์„ ๊ธฐ๋กํ•˜๋‹ค๊ฐ€ fluff ๋‹จ๊ณ„์—์„œ ๋ธŒ๋กœ๋“œ์บ์ŠคํŠธ๋ ๋•Œ ์ฐจ์ด๋ฅผ ๋ณผ์ˆ˜ ์žˆ๋‹ค.
    • โ†’ ์œ ์ถœ์ •๋ณด์˜ ์–‘์„ ์ตœ์†Œํ™”ํ•˜๋ ค๋ฉด ์ ์ฐจ ์ž‘์€ ํŠธ๋žœ์žญ์…˜์„ ์ถ”๊ฐ€ํ•˜๋Š” ๋Œ€์‹  ๋น„๊ต ๊ฐ€๋Šฅํ•œ ํฌ๊ธฐ์˜ ํŠธ๋žœ์žญ์…˜๋งŒ ๋ณ‘ํ•ฉํ•ด์•ผํ•จ.
  • DoS ๊ณต๊ฒฉ์„ ๋ง‰๊ธฐ์œ„ํ•ด ๋…ธ๋“œ๋Š” ์ถฉ๋Œ์ด ์—†์–ด์•ผํ•œ๋‹ค.
    • ๋ชจ๋“  ๋ณ‘ํ•ฉ์ค‘์ธ ํŠธ๋žœ์žญ์…˜์€ ์œ ํšจํ•ด์•ผํ•˜๋ฉฐ ๊ธฐ์กด์˜ ์ž…๋ ฅ์„ ์ฐธ์กฐํ•จ.
    • ์ด์ค‘ ์ง€์ถœ ๋“ฑ์ด ์—†์–ด์•ผํ•จ.
    • ย 
C. Beam์€ ๋” ๋‚˜์•„๊ฐ€, ๋ณ‘ํ•ฉํ•  ์ถœ๋ ฅ์ด ์ถฉ๋ถ„ํ•˜์ง€ ์•Š์€ ์ƒํ™ฉ์—์„œ ๋…ธ๋“œ๊ฐ€ dummy ๋˜๋Š” decoy UTXO๋ฅผ ์ถ”๊ฐ€ํ• ์ˆ˜ ์žˆ๋‹ค.
  • dummy : 0๊ฐ’์„ ์ธ์ฝ”๋”ฉํ•˜์ง€๋งŒ ๋‹ค๋ฅธ๊ฒƒ๊ณผ ๋น„์Šทํ•˜๊ฒŒ ๋ณด์ด๋Š” UTXO
  • ์ถ”๊ฐ€๋œ dummy์— ๋Œ€ํ•ด (๋ธ”๋กnum ๊ธฐ์ค€์œผ๋กœ)๋žœ๋คํƒ€์ด๋จธ๋ฅผ ์„ค์ •ํ•˜๊ณ  ๊ทธํ›„ ์ž„์˜์˜ ํŠธ๋žœ์žญ์…˜์—์„œ ๊ฐ™์€ UTXO๋ฅผ ์ž…๋ ฅ์œผ๋กœ ์ถ”๊ฐ€ํ•œ๋‹ค.
  • ์ด๋Ÿฐ์‹์œผ๋กœ real activity์™€ ์„ž์—ฌ์žˆ๊ณ  ๊ตฌ๋ณ„๋ถˆ๊ฐ€๋Šฅํ•œ background activity๋ฅผ ์ƒ์„ฑํ•œ๋‹ค.
  • ์ด๋Ÿฐ ๋ฐฉ๋ฒ•์˜ ๋‹จ์ ์€, dummy UTXO๋ฅผ ์ƒ์„ฑํ•จ์œผ๋กœ์จ, ๋ธ”๋ก๊ณต๊ฐ„, ๋„คํŠธ์›Œํฌ ํŠธ๋ž˜ํ”ฝ, ์œ ํšจ์„ฑ ๊ฒ€์‚ฌ๋ฅผ ์œ„ํ•œ ์ž์›์„ ๋‚ญ๋น„ํ•˜๋Š”๊ฒƒ.
  • ๊ทธ๋Ÿฌ๋‚˜ ์žฅ๊ธฐ์ ์œผ๋กœ ํ™•์žฅ์„ฑ์— ์˜ํ–ฅ์„ ๋ฏธ์น˜์ง€ ์•Š์„ ๊ฒƒ์ด๋ฉฐ, ์ปค๋„์ด ์ƒ์„ฑ๋˜์ง€ ์•Š๊ธฐ๋•Œ๋ฌธ์— ๋”๋ฏธ UTXO๋Š” ๊ฒฐ๊ตญ ์†Œ๋น„๋œ๋‹ค.
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์‹ค์ œ๋กœ๋Š” ์ด๋Ÿฐ A,B,C ๋ฐฉ๋ฒ•์ด ํ•จ๊ป˜ ์‚ฌ์šฉ๋˜์–ด์•ผํ•œ๋‹ค.
ย 
์–ผ๋งˆ๋‚˜ ํšจ๊ณผ ์žˆ์„๊ฒƒ์ธ๊ฐ€?
์ •ํ™•ํ•œ ์ˆ˜์น˜๋Š” ์•„์ง ์—†์œผ๋‚˜, ์ต๋ช…์„ฑ์— ๊ธ์ •์  ์˜ํ–ฅ์„ ๋ฏธ์นœ๋‹ค.
์˜ˆ๋ฅผ๋“ค์–ด, 2๊ฐœ์˜ ํŠธ๋žœ์žญ์…˜์ด ํ•˜๋‚˜๋กœ ๋ณ‘ํ•ฉ์‹œ ์ด๋ฏธ ์ž…์ถœ๋ ฅ๊ด€๊ณ„์— ๋Œ€ํ•ด ์ด๋ฏธ 1/2์˜ ๋ถˆํ™•์‹ค์„ฑ์„ ์ฐฝ์ถœํ•œ๋‹ค.
๋”ฐ๋ผ์„œ ๊ณต๊ฒฉ์ž๊ฐ€ 10ํ™‰์œผ๋กœ ์‚ฌ์šฉ์ž๋ฅผ ๋“œ๋Ÿฌ๋‚ด๋ฉด, ๊ทธ ์‚ฌ์šฉ์ž ๊ด€๊ณ„์— ๋Œ€ํ•œ ํ™•๋ฅ ์€ ์•ฝ 10^-3 ์ด๋‹ค.
๋ณ‘ํ•ฉ์ด ์ง„ํ–‰์ค‘์ธ ํŠธ๋žœ์žญ์…˜์—๋Š” ์›๋ณธ ์—ฌ๋ถ€๊ฐ€ ํ‘œ์‹œ๋˜์ง€ ์•Š์œผ๋ฏ€๋กœ, ๋‚œ๋…ํ™” ๊ธฐ์ค€์€ ์ž…๋ ฅ๊ณผ ์ถœ๋ ฅ์˜ ์ˆ˜๋กœ ์ด์–ด์ง€๋Š” ๊ฐ€์‹œ์ ์ธ ํŠธ๋žœ์žญ์…˜ ๋งค๊ฐœ๋ณ€์ˆ˜๋ฅผ ๊ธฐ๋ฐ˜์œผ๋กœ ํ•ด์•ผํ•œ๋‹ค.
TPS๋Š” ๊ธฐ์กด ํ”„๋กœ์ ํŠธ์™€ ๋น„๊ตํ•ด ํฌ๊ฒŒ ์ฆ๊ฐ€ํ•˜์ง€ ์•Š๋Š”๋‹ค.
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๊ด€์‹ฌ ์ฃผ์ œ๋ฅผ ์„ ํƒํ•ด์ฃผ์„ธ์š”. ์„ ํƒํ•˜์ง€ ์•Š์œผ๋ฉด ๋ชจ๋“  ๊ธ€์„ ๊ตฌ๋…ํ•ฉ๋‹ˆ๋‹ค.