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- two pipe direct return system 双管直接回水系统
- Closed- loop double pipe direct return system 闭式双管异程系统
- By employing the method that shuts each subcircuit, the paper analyzes and compares the hydraulic stability of direct return system (DRS) and reverse return system (RRS). 摘要采用依次关闭各支路，然后计算未关闭支路流量的方法，分析和对比异程系统与同程系统的稳定性。
- two pipe direct downfeed system 下给式双管热水供暖系统
- Two Pipe - One for steam supply and one for condensate return. 双管-一条用于蒸汽供应，另一条用于凝结水回流。
- Keywords closed-loop water system;stability;flow deviation;direct return system（DRS）;reverse return system（RRS）; 闭式水系统;稳定性;流量偏离系数;异程系统;同程系统;
- Separate the two pipes by unscrewing them. 松开螺丝把两根管子拆开。
- Is a vapour return system fitted? 是否装有回毒系统?
- direct return systemn. 直接回水系统
- direct return system(DRS) 异程系统
- The two pipes which connect with the sewer have been blocked up for a month. 这两条与下水道相连的管子已经堵了一个月。
- Specifies that the pipe direction is two-way. 指定管道方向为双向。
- Let's screw the two pipes together end to end. 咱们把这两根管子接起来拧紧。
- Comparison and Analysis of Hydraulic Stability in Direct Return System and Reverse Return System 异程系统与同程系统的水力稳定性分析和比较
- Most niladic SQL Server functions return system information. 大多数niladic SQL Server函数返回系统信息。
- Let us screw the two pipes together end to end . 咱们把这两根管子接起来拧紧。
- The air was removed from between the two pipes. 两根管子之间空气已抽出。
- Screw the two pipes together end to end. 用螺栓把两根管子头对头地拧住。
- A callback return system service cannot be executed when no callback is active. 没有启动回调功能时,回调系统服务不能运行。
- Wafer-style held in place between two pipe flanges. Easy to install but cannot be used as isolation valve. 平板式(对夹式):固定在两个管道法兰之间。安装容易,但是不能作为隔断阀使用。
