“rocker”的概念、定义、翻译、参考文献-科学参考

单词	rocker
释义	rocker [`räk·ǝr] ^{CIVIL ENGINEERING} A support at the end of a truss or girder which permits rotation and horizontal movement to allow for expansion and contraction. ^{GRAPHIC ARTS} A type of chisel, with a sharp beveled edge, used in mezzotint engraving; it is set on the surface of a copper plate and rocked back and forth to produce a rough grain, which, when printed, produces a velvety black. ^{MINING ENGINEERING} A small digging bucket mounted on two rocker arms in which auriferous alluvial sands are agitated by oscillation, in water, to collect gold. ^ORDNANCE Movable, built-in support in a field gun carriage, between the trail and the cradle, that allows changes in elevation to be made without disturbing the angle of position setting.
随便看	telephone ringer telephone set telephone signal telephone switchboard telephone system telephone theory telephone transmitter telephony telephoto telephotography telephoto lens telephotometer telephotometry teleport telepresence teleprinter teleprinter code teleprinting teleprocessing teleprocessing monitor telepsychrometer Teleran telerecording bathythermometer telering telerobot

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