本周，工程队曾试图将一个100吨重的钢制屋形盖置于漏油点上，不过很快，不断积聚的甲烷冰堵塞了该装置，最终以失败告终。
Efforts failed this week to lower a 100-ton steel containment dome onto the leakage site, because quickly accumulated methane hydrates blocked the device.
将差速器向盆形齿轮调整工具处的变速器盖方向压，然后读取百分表上的间隙值。
Press the differential towards the transmission cover at the crown wheel adjusting tool and read off the backlash on the dial gauge.
这个没有盖的结构被放在一个很大的不锈钢鼓形圆桶底部旋转。
The uncapped frames are put in a carousel that sits on the bottom of a large stainless steel drum.
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