英语词汇“proof timber”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

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proof timber

† proof timber n. Shipbuilding Obsolete rare a notional timber used as a test of straightness or accuracy (see quot. 1805).

ΚΠ

1805 Shipwright's Vade-mecum 122 Proof timber, an imaginary timber, expressed by vertical lines in the sheer-draught, similar to the joints of the square timbers, and used nearly forward and aft to prove the fairness of the body.

1822 J. Fincham Directions Laying off Ships 16 Should the timbers taken from the draught not be sufficient to prove the body at the extremities, other timbers called proof timbers must be got in forward and aft.

extracted from proofn.

as lemmas

单词	proof timber
释义	> as lemmas proof timber † proof timber n. Shipbuilding Obsolete rare a notional timber used as a test of straightness or accuracy (see quot. 1805). ΚΠ 1805 Shipwright's Vade-mecum 122 Proof timber, an imaginary timber, expressed by vertical lines in the sheer-draught, similar to the joints of the square timbers, and used nearly forward and aft to prove the fairness of the body. 1822 J. Fincham Directions Laying off Ships 16 Should the timbers taken from the draught not be sufficient to prove the body at the extremities, other timbers called proof timbers must be got in forward and aft. extracted from proofn. < as lemmas
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