The structures of the electric field shielding ring, arc contact, main contact and nozzle etc. have been optimized, analysed and discussed respectively, and they are optimized synthetically at last.

主要对均压环、弧触头、主触头、喷口等结构进行了优化及分析，分别进行了讨论。并且进行了综合优化。

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This can be practical useful to the design of magnetic shielding for ring laser gyro.

这对于设计激光陀螺的磁屏蔽结构具有一定的实用价值。

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But the shut-down schedule also includes upgrades to all four of the LHC's detectors, the shielding of electronics, and even an overhaul of the ventilation system of the tunnel that houses the main accelerator ring.

BBC: LHC switches off for two-year break