蒸汽压力或给水压力下降。
将反渗透给水预处理设备运行方式，以及反渗透给水压力、给水温度等运行参数进行了技术优化。
Technological optimized the operation way of the reverse osmosis supply water pretreatment equipment and the operation parameters of pressure, temperature etc.
LDPE树脂的拉伸强度低，耐压差，刚性差，成型加工时尺寸稳定性差，并且连接困难，不适宜作为给水压力管的材料。
Tensile strength of LDPE resin low voltage differential, rigid poor dimensional stability when processing poor, and connection difficulties, not suitable as a water supply pressure tube material.
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