The water drops can corrode the wind hole as well as the equipments in the draught so as to reduce the lifespan of them.The shortcomings mentioned above can also bring some other bad influences.
英
美
- 這種現象本是不應出現的，水滴會(huì )使風(fēng)道銹蝕，也會(huì )使風(fēng)口處的設備銹蝕，減少了風(fēng)道及設備的壽命，在這些缺點(diǎn)的背后，還帶來(lái)了其他的影響。
