Something, such as the thread of a screw or the spiralcondenser in a still, that resembles a worm in form or appearance.
状的物品某物，如螺旋线或蒸馏器的螺旋冷凝器，在构成或外表上像蠕虫。
2
On the base of both consideration of heat transfer performance and resistance, the optimization and research are carried out on single spiral duct double pipe condenser.
本文在综合考虑传热性能和摩擦阻力等因素的基础上，对单螺旋槽套管式冷凝器的结构进行了优化和研究。
3
The spiral bands are basically equal in length to a condenser heat-exchange straight pipe and are inserted in the condenser straight pipe.