back flush是什么意思

用法例句

Complete technology and equipment for sintering batch test in steel plants;

钢铁厂烧结配料试验成套设备

Control of Over-test and Short-test in Shock Spectrum;

冲击谱中过试验和欠试验的控制

The test of Φ610×12.7mm UOE welding tube X60 pipeling steel;

X60管线钢Φ610×12．7mmUOE焊管试验

Industrial Experiment of Blast Furnace Operation with Proportion of Rio Tinto Mixed Lump Ore at Meigang;

梅钢高炉配用力拓混合块矿工业试验

Saccharification Experiment for Extrusion Cooked Wheat Used as Beer Adjunct;

挤压蒸煮小麦作啤酒辅料的糖化试验

Design and Experiment of Welding with Trailing Peening System Based on Electromagnetism Control;

电磁控制的随焊锤击系统设计与试验

A trial on the health education intervention of the community residents;

社区居民健康教育干预试验

Preliminary study on advanced trial for new cassava breeding lines;

木薯新品系高级系比试验初报

Comparison and analysis of the results of pile skin friction by dynamic and static load tests;

桩周土摩阻力动静对比试验研究

Design, modal analysis and tests of composites wing box;

复合材料机翼盒段的设计、模态分析和试验

Study on primary system tests of Large Unit of Generator-transformer Bank Protection;

大型机组发变组保护一次试验的探讨

Development of experiment system for parker performance testing in high temperature;

封隔器高温性能试验系统研制

Design and Testing of Technological Process for End-upsetting of Oil Drill Pipe;

石油钻杆管端加厚工艺过程设计与试验

Testing Concerning Process of Threading Non-CoupledEnd of Coupled Tubing;

带接箍油管另一端加工螺纹的加工工艺试验