“open timbering”的概念、定义、翻译、参考文献-科学参考

单词	open timbering
释义	open timbering [`ō·pǝn `tim·bǝ·riŋ] ^{MINING ENGINEERING} A method of supporting the ground in a mine shaft or tunnel; supports are several feet apart, with the ground between them secured by struts.
随便看	multiplexer multiplex holography multiplex mode multiplex operation multiplexor multiplexor channel operation multiplexor terminal unit multiplex transmission multiple x-y recorder multiple zone multiplicand multiplication multiplication constant multiplication factor multiplication on the left multiplication on the right multiplication sign multiplication table multiplication time multiplicative acoustic array multiplicative congruential generator multiplicative identity multiplicative inverse multiplicative subset multiplicity

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