... sheerleg人字架 sheerlegs人字起重架 sheers人字起重架 ...
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... 双柱面透镜 /bicylinder/ 双柱起重机 /shearlegs/sheerlegs/sheers/ 双锥 /bipyramid/ ...
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floating sheerlegs 起重船 ; 人字吊杆起重船 ; 人字吊臂起重船
N a device for lifting heavy weights consisting of two or more spars lashed together at the upper ends from which a lifting tackle is suspended 人字起重架 (Also called shears)
shearlegs
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