循环水泵出水管

circulating decimal【数】;periodic decimal【数】;periodical fraction【数】

circulating liquid laser

circulating oil【机】;recycle oil【机】;turning oil【机】

circulating-air baking oven

circulating fund; floating money; liquid fund; working fund

pulsatile circulating ropeway【机】

hot water circulating pump

representative circulating time