| 词汇 | proof load |
| 释义 | Definition of proof load in English:proof loadnoun Mechanics
OriginMid 19th century; earliest use found in Macquorn Rankine (1820–1872), civil engineer and physicist. Definition of proof load in US English:proof loadnoun Mechanics
OriginMid 19th century; earliest use found in Macquorn Rankine (1820–1872), civil engineer and physicist. |
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