Summer precipitation has decreased and the increase in population has put pressure on the region's water supplies.
而夏季降水却减少了，人口也增加了，这对该区的供水也造成了压力。
2
Precipitation of, at the same time, USES the special relief valve to keep the battery internal pressure.
的析出，同时，采用特制安全阀使电池保持一定的内压。
3
The advantage and disadvantage of the five recycling methods, direct heating, direct aqueous vapor, indirect aqueous vapor, reduced pressure distillation, precipitation method, is discussed.