For treatment plants which have additional upstream hydraulic head available, the operating water level can be raised and the shaft bearings can then be mounted directly to the top of the tank walls.
这促使轴，对于具有额外的上游水力头的污水处理厂，可以提高运行污水水平，然后直接将轴轴承提高到池壁顶端。
A new horizontal well production technology without dismantling well head and pulling up string to find water and test is introduced which can decrease operating times and cost.
水平井不动井口、管柱找水、试油、生产工艺技术，大大减少了作业次数，节约了生产成本。
A new horizontal well production technology without dismantling well head and pulling up string to find water and test is introduced which can decrease operating times and cost.
水平井不动井口、管柱找水、试油、生产工艺技术，大大减少了作业次数，节约了生产成本。
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