With good water and dust proof functions;
具有良好的防尘、防水等性能；
Knowledge in waterproof, dust proof and sealing.
具有防水、防尘和密封方面的知识。
The front of the beam expansion system is also provided with a dust proof mirror.
在其扩束系统前面还设有一个防尘镜。
The design and application situation about HZ type dust proof airtight cover is introduced.
简要介绍了HZ型防尘密闭罩的研究设计和工程应用情况。
The design and application situation about HZ type dust proof airtight cover is introduced.
简要介绍了HZ型防尘密闭罩的研究设计和工程应用情况。
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