| 释义 |
rotating derrick
- nonirritatingadj. 无刺激性
- prekindergartenadj. 幼儿园学龄前的
- 井架jǐng jià
derrick
- 钻油塔zuàn yóu tǎ
oil derrick
- 旋转轴xuán zhuǎn zhóu
rotation axis; axle of revolution; rotating shaft
- 架式钢卷尺jià shì gāng juàn chǐ
derrick type steel tapes
- 起重机qǐ zhòng jī
chain block, crane, derrick, hoist, lift
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