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- plain valve head 平阀头,平阀体
- The results show that a part of the flow passage of the valve seat is occupied by the cavity under the valve head, leading to a decrease of flow rate. 研究结果表明：阀碟下方的空穴区占据了阀座喉部通流面积的一部分，使得有效的通流面积减小，影响了阀门的通流能力；
- Failure Analysis of Engine Valve Head Falling 发动机气门盘部弦位掉块失效分析
- emergency exhaust valve head connection 紧急排汽阀盖接头
- connection intercepting valve head 中间阀盖接头
- We bivouacked on the open plain. 我们在开阔的原野上露营。
- intercepting valve head connection 中间阀盖接头
- The problem is quite plain to us. 那问题我们都很明白。
- You needn't labor a point that is perfectly plain. 这点很明显，你用不着讲个没完。
- His devotion to music is plain to see. 他对音乐的挚爱是显而易见的。
- Is the coastal plain good for farming? 沿岸平原适宜耕种吗？
- It's plain that he is the criminal. 很明显，他是罪犯。
- Failure Analysis of Falling Pieces for 4102 Admission Valve Head 4102进气门头部掉块失效分析
- You needn't labour a point that is perfectly plain. 这点很明显，你用不着讲个没完。
- A policeman in plain clothes shadowed the criminal all day. 有个便衣警察整天秘密监视那个罪犯。
- Have you turned off the water valve? 你关掉水阀了吗？
- He set an example of plain living. 他树立了艰苦朴素的榜样。
- To be plain with you, I know nothing about it. 坦白对你讲，我对此一无所知。
- We must keep to the style of plain living. 我们必须保持朴实生活的作风。
- The Indian of the west is a rover of the plain. 西部的印第安人在大平原上过着游牧生活。
