集水沟隔气弯管 gully trap
弯曲沟 Flex groove ; flexing groove
装有隔气弯管的集水沟 trapped gully
转弯掉进沟里了 Let's ditch school today
集水沟气隔弯管 gully trap
在黄土塬区或复杂的黄土地形区作煤田地震勘探工作需要进行沿沟弯线地震施工技术的研究。
Coal field seismic prospecting in loess plateau or complicated loess topographic area needs going on the research of crook seismic working technology along channel.
与轴肩挡边处于一边的沟墙61被连接于沟底深中心71处，这样一来，弯面75就与轴肩挡边在一边了。
The groove wall 61 on the side with shoulder rib is connected with the groove bottom deepest part 71 in that condition by the curved surface part 75 on the side with shoulder rib.
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