“lightening hole”的概念、定义、翻译、参考文献-科学参考

单词	lightening hole
释义	lightening hole [`līt·niŋ ´hōl] ^{CIVIL ENGINEERING} An opening cut into a strengthening member that decreases its weight without significantly altering its strength.
随便看	Casparian strip Cassadagan cassava Cassegrain antenna Cassegrain focus Cassegrain-Newtonian telescope Cassegrain telescope Cassel green Casselian cassette cassette cartridge system cassette memory cassia oil Cassiar orogeny Cassidulinacea Cassiduloida cassidyite Cassinian oval Cassini projection Cassini's division Cassiopeia Cassiopeia A cassiterite cassowary cast

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