secondary circulating system的意思|示意

Unfortunately, the bathtub is not a spa-style tub with a secondary heating system and circulating jets, but rather a simple water containment vessel.

不幸的是，这个浴缸不是一个具有二次加热系统和循环射流的温泉式浴缸，而是一个简单的水容器。

Unfortunately, the bathtub is not a spa-style tub with a secondary heating system and circulating jets, but rather a simple water containment vessel.

不幸的是，这个浴缸没有温泉热水模式，就是没有另外的加热系统和循环的喷嘴，而是个简单的水密闭容器。

In the hot water system a high water tank with solenoid valve controlled water feeder is used to replace the secondary circulating pump.

热水系统中，采用电磁阀根据水箱液位进行补水，省去二次循环泵。