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- reverse flow technique 逆流技术
- Requirement: Valve must be tight against reverse flow. 要求:这种阀门对于回流必须密封紧密。
- Purpose: To test valve No. 1 for tightness against reverse flow. 目的:检测1号止回阀对于回流的密封性。
- Use a check valve to prevent reverse flow into the cylinder. 采用止回阀,防止回流入钢瓶。
- Purpose: To test check valve No. 2 for tightness against reverse flow. 目的:检测止回阀2号对于回流的密封性。
- Spring loaded for fast closure, eliminating reverse flow slam and water hammer. 负载弹簧用于快速关闭,消除逆流冲击和水锤。
- According to Newton-Raphson(NR) method, a new power flow method based on reliable power flow technique is proposed. 摘要根据牛顿法的基本原理，建立了一种基于辐射配网潮流技术的求解有环配电网潮流的新模型。
- Precision machined tilting disc and seat for tight shutoff in reverse flow direction. 精密机加工的倾斜式阀瓣和阀座,适用于逆流的紧密关闭。
- Please interpret the possible reasons of root-rot of plants in deep flow technique. 在深液流水培系统中,发现植物根系腐烂现象,试解释可能造成此现象的原因。
- Never reverse flow through a regulator or rely upon it to act as a check valve. It will not perform this function. 禁止通过调整器倒流或依靠它作为止回阀。它不允许执行这个功能。
- Series 774X Double Check Valve Assemblies are designed to prevent the reverse flow of polluted water from entering the potable water system. 系列747双止回阀总成用于防止污水回流进入饮用水系统中。
- Tower type parallel impellent flow technique was used to build overlarge capacity esterification reactor. 聚友公司采用塔式平推流技术建设超大容量酯化反应器；
- Requirements: Valve must be tight against reverse flow under all pressure differentials. 要求:在所有压差下,阀门对于回流必须是密封的。
- For lesion at the distal region, this flap may be modified as a distal-based flap based on reverse flow. 其适应症为近位或中位指节部位之疤痕挛缩，较远位者则可改采逆流之远位皮瓣重建。
- After these it introduce the key technique used in the system, including data-warehouse technique, working flow technique, IDDS etc. 然后介绍了系统实现中所需用到的一些关键技术，包括数据仓库技术、工作流技术、决策支持系统等。
- Equipped with mechanical lift check feature to close valve the moment flow stops, preventing reverse flow. 配置机械提升式止回阀，当阀门出现流量停止时关闭阀门，防止倒流。
- Dynamic power flow technique is a powerful tool to simulate the power systems in dispatcher training simulator (DTS) system. 动态潮流技术在调度员培训仿真系统中有重要的地位。
- Series774 Double Check Valve Assemblies are designed to prevent the reverse flow of polluted water from entering into the potable water system. 系列747双止回阀总成用于防止污水回流进入饮用水系统中。
- Series774 XDCDA Double Check Detector Assemblies are designed to prevent the reverse flow of polluted water from entering the potable water supply. 系列747XDCDA双止回阀检测器总成用于防止污水回流进入饮用水系统中。
- Effect of the addition of CeO2 on the catalytic activity of CuO/|Al2O3 catalyst for CO oxidation reaction was investigated by a microreactorGC system flow technique. 用色谱－微反流动法技术，考察了CuO催化剂对CO的性及添加CeO2对催化活性的影响；
