... 上轧槽 盖面焊道 顶部焊道 toppass 井槽盖 pit cover 垃圾滑槽盖 garbage chute lid ...
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... pitting crack斑状裂纹、点状裂纹 pit cover坑盖 pit crane均热炉吊车 ...
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Drainage pit cover 窖井盖
fuel pit cover 燃料水池顶盖
Open pit cover stripping 露天揭顶
soaking pit furnace cover 均热炉炉盖
·2,447,543篇论文数据，部分数据来源于NoteExpress
The pit cover should be sealed over with tar paper or plastic.
顶盖必须用焦油纸或塑料封闭。
youdao
It's always nice when I could pit a bit later than people and cover people off.
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