Suggestions on Spoken English Teaching from Backwash Effects of Spoken English Testing;
反拨作用是指测试对教学的影响。
The effects of direct filter backwash water recovery on the flocculation, sedimentation and filtration processes are studied.
作者系统地分析了直接回收滤池反冲洗水对絮凝、沉淀和过滤工艺的影响；
This utility model has the advantage of achieving the dual effects of excision and backwash on one sewage pump, thereby widening sphere of application of the sewage pump.
本实用新型的优点是能在一台污水泵上实现切割和反冲洗的双重功效，提高污水泵的适用范围。
This utility model has the advantage of achieving the dual effects of excision and backwash on one sewage pump, thereby widening sphere of application of the sewage pump.
本实用新型的优点是能在一台污水泵上实现切割和反冲洗的双重功效，提高污水泵的适用范围。
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