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Designed one kind of two stage wedge - type polarization independent optical isolator is designed.
设计出一种偏振无关的两极楔形光隔离器.
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The electric wedge type gate valve has small fluid resistance and light medium erosion.
电动楔式闸阀是一种做直线运动的阀门.该阀流体阻力小,密封面受介质的冲刷和侵蚀小.
The most commonly used form of wedge - type gate valve gate valve and parallel.
最常用的形式是楔 式 闸阀和平行式闸阀.
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