Read flow meters, gauges and other recording instruments to measure water output and consumption levels, bacterial content, chlorine and fluoride levels.
检查流量计，压力表和其他记录仪器，测量水的输出水平和消费水平，细菌含量，氯和氟水平。
2
Producing polyvinyl chloride (PVC), via vinyl chlorine monomer (VCM), is the primary end use for EDC, accounting for an estimated 95% of the world EDC consumption.