您要查找的是不是：
- weight type pressure retaining valve 重量式保压阀
- the pressure retaining valve bearer 保压阀支架
- A dyke was built to retain the floods. 修了一道堤坝挡住洪水。
- Have you turned off the water valve? 你关掉水阀了吗？
- We need an eye bolt to fit this valve. 我们需要一个有眼螺栓来固定这个阀门。
- The mental faculty of retaining and recalling past experience. 记忆，记忆力储存与回忆以往经历的大脑之能力
- He soon detected the faulty valve. 他很快查到了出毛病的阀门。
- I retain a clear memory of those days. 我还清晰地记得那些日子。
- He has managed to retain most of his fortune. 他设法保存了他的大部分财产。
- Concentrated study will help you to retain knowledge. 专心学习有助于你记住知识。
- The pump sucks air out (of the vessel) through this valve. 这台泵通过这个阀门把(容器中的)空气抽出。
- Dicotyledonous plants retain a series of strands. 双子叶植物中保留着一系列的束。
- Refit the handwheel retaining screw. 重新装置手轮固定螺丝。
- The exhaust valve on my car have burn out three times. 我车子上的排气阀已烧坏三次。
- Reinstall handwheel and secure with retaining bolt. 重新安装手轮，用固定螺栓加固。
- What should I do? Retain the red door? 现在门已经刷上红色了，怎么办?
- The exhaust valve on my car has burnt out three times. 我车子上的排气阀已烧坏三次。
- I cannot retain so much information. 我不能记住这么多的信息。
- You must retain your school reports. 你必须将学习成绩单保存好。
- China dishes retain heat longer than metal pans do. 瓷碟子保温的时间要比金属盘久。
