water-retaining structure

: Air-water two-phase flow void fraction and counter-current experiments in annular channel are performed in a two-phase flow test loop at Japan Atomic Energy Research Institute, flow structure is also observed.

在日本原子力研究所的一个两相流试验台架上，进行了环形流道空气-水两相流空泡份额和逆向流试验，观察了其流型。

In order to lower cost of buried pipe engineering, using simulation test installation a filter structure of buried PVC pipe with double partitions and wave vein for water drainage was researched in laboratory.

为降低暗管工程施工成本，在实验室利用模拟实验装置研究了PVC双壁波纹排水暗管的滤水结构。

According to the completion test purposes, water depth and test formation features factors, optimize the types of test tools and connection of test tools, design the well test string structure.

根据完井测试目的、水深和测试地层特点等因素，优选测试工具类型和组合方式，设计完井测试管柱的结构。

I do some systems reserches on the well completion test string structure of deep water.

本论文针对深水完井测试管柱结构进行了系统研究。

Cotton canopy structure and yield was determined and analyzed in different water and fertilizer conditions under mulch drip irrigation ( MDI) with Xinluzao No.7 as the test material.

以新陆早7号为试材，进行了不同水肥条件下膜下滴灌棉株群体冠层结构测定和产量结果分析。