Selects & Better 特选级和更好
The article selects siphon technique and the schemes on grouting and plugging consolidation designs, which is aimed at the water leakage in culvert pipes and acquire better consolidation effect.
针对涵管漏水隐患选取虹吸管技术和灌浆封堵加固设计方案，取得了较好的加固效果。
According to foundry technique feature and the cost checking on economic management, the foundry selects the better one from them.
铸造工艺的经济管理就是根据铸造工艺特点，按照成本核算的方法，从中选择一种最佳工艺。
A kind of selective procedure of change gear which is operated more conveniently is presented. It has a better generality. It can quickly selects all compositions whose accuracy are given.
介绍了一种操作更方便的、通用性更好的挂轮选择程序，它可以迅速地选择给定精度下的所有组合。
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