If the leak is very small and in an area you can't get at, around the evaporator for instance, they can be very elusive.
如果泄漏很少，并且发生在你无法够到的区域，比如蒸发器附近，那么你会很难发现它们。
2
Centrifugal scraper membrane evaporator using advanced foreign technology is of leading position and international level in domestic area of scraper film evaporator.
离心式刮板薄膜蒸发器采用国外先进技术，在国内刮板式薄膜蒸发器领域内具有国际水平的领先地位。
3
Miniature evaporator is a compact exchanger with small volume, light weight, and big heat transfer area per unit of volume. It is an important application in the field of cryogenics and refrigeration.