Installation rule for neon tubes 霓虹灯安装规范
Installation rule for water heaters 电热水器的安装规范 ; 电热水器安装规范
installation rule for room air-conditioner 房间空气调节器安装规范
Basis rule for installation work 设备吊装总体原则
The installation of lights with ranges prescribed in Rule 22, until four years after the date of entry into force of these Regulations.
在本规则生效之日后四年内，免除安装达到第二十二条规定能见距离的号灯。
The setting rule of the heat exchanger and auxiliary heating cooling installation was presented, and the attention that should be paid to the application of the system was pointed out, too.
对系统中换热器和辅助冷热源的设置原则以及采用该系统应注意的问题进行了说明。
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