The application of polypropylene membrane in MBR could resolve the problems of short life span and low strength that arc usually possessed by other material of membrane.

在膜生物反应器中使用聚丙烯中空纤维膜材料的膜组件，可以解决以往其它材料寿命短、强度低、易污染等问题。

youdao

Single pipe pile shows sliding failure at interface and cannot utilize the strength of material; the bearing capacity and deformation ability are low.

结果表明，现行的单钢管桩属于界面的粘结破坏，承载力低，变形能力弱，不能充分发挥材料特性。

youdao

It is the material with low viscosity and some certain compressive strength.

为低粘度，具有一定的压缩强度的材料。

youdao