求助 急! 急!? 1、and all such piping lines should be 3 spares for replacement as required for maintenance intervals in warehouse as the real installation spool。 所有的管线应有3个备件放于仓库作为安装检查,用于定期维修 2、for all valve handle, we should use extra handle if the insulation thickness 80mm. 对于所有的阀柄,如果保温厚度在 80mm就用加长阀柄。 仅供参考!查看更多