开发了两种电缆隧道入口处堵水装置——成型橡胶件密封装置和密封膏密封装置。
Two types of water blocking device for the inlet of cable tunnel are developed, one is a profiled rubber seal and the other is a sealant seal.
一种简易净水装置，解决没有配备滤水装置的牙科综合治疗机经常出现的手机脏堵问题。
A simple water treatment device is developed to make the handpiece of the dental multipurpose therapy unit free of being dirtied and jammed.
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