cross valve meaning in Chinese

三通阀
十字阀
四通阀
转换阀

The controller will turn on the compressor and turn off the cross valve after turning on the defrosting , and then use heat pump to defrost
化霜启动后开压缩机关四通阀，利用热泵化霜。
The main function is the calculation degree of all kinds of the valves ( cross valves , blades valves , draught valves , etc . ) fitted in the air system in the condition of the layout and airflow of the air system . and the calculation degree can be exported in the report forms , which can be treated as the fixing degree of valves
软件的主要功能为在已知风系统布置情况及系统风量设计参数下，计算设计工况下的系统中诸如多叶调节阀，风口调节阀，带调节阀片的四通等等部件的阀片计算开度，并将开度结果以报表形式输出，作为安装公司安装风阀时的风阀预调开度。