undervest n.汗衫,汗背心...undervoltage 欠压...undervoltage protection 欠压保护...undervoltage relay 欠压继电器...undervoltage release 欠压释放器...undervulcanization 欠硫化...underwaist n.衬里背心,儿童内衣...underwate sound projector 水底声音投射器...underwater a.在水中的ad.在水下水面下...underwater cutting 水中切削,水中切断...underwater exercise 水中运动...underwater line 水下管线...underwater long-range missile system 水下远程导弹系统...underwater tank 水下贮罐...underwater welding 水中熔接...underwater-to-air missile 水下对空导弹...underwear n.内衣...underweight n.重量不足a.重量不足的...underwent undergo的过去式...underwood n.下木,林下灌丛...underwood chart 安特乌得图表...
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