This meter composes by spring pressure meter and a line resistance transmitter. 本仪表由一个弹簧管压力表和一个滑线电阻式发送器组成。
If a firm needs to get this message or content out to subscribers,it must contract with a channel delivery service or set up its own Transmitter software. 如果一个公司需要将其信息发送给订户,就需要订购通道交付服务,或者建立自己的发送器软件。