Ensure that the signs are correct throughout your calculations. For example, static lift will be positive if the water source lies below the pump, but negative if it lies above the pump. Drawing a diagram of the system may help you visualize the elevation changes. References North Dakota Stat...
翻译 Calculate ___ on sth/ doing sth Calendar Calm down Camera Be in camp Campaign... 分享回复赞 英语吧 绘声绘色荷塘月 不知道翻译行不行求大神指点帮忙修正mounted concrete pump through introducing constituent part of the concrete pumping system, explaining the principle of hydraulic system and ...