Noun:

1. a filter to retain larger pieces while smaller pieces and liquids pass through

strainn.拉紧；紧张；血统；笔调；（动植物或疾病的）品种v.拉紧；劳累；过分使用strain axes应变主轴strain roll松紧辊strain tube应变管strain path应变过程straincrack变形裂缝strain line应变线strain gage应变计,电阻丝应变仪strain cell应变计strain wave冲击拉伸strain work应变功

1. Pipe supports should be provided under the valve and strainer bodies.
   管道支撑应该在阀门和过滤器主体之下。
2. Avoid damaging effects of foreign matter in the flow by using a strainer ahead of the valve.
   为了避免外来物质的破坏作用，要在阀门前面采用一个过滤器。