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微明火花试验网    微明火花试验网   WeiMing Intrinsic Safety Spark Test
搏之不得,名曰;见小曰。  《道德经》  It is such a small thing that you can not touch it ,named WEI; But you can feel it,named MING. Written by Laozi《Tao Te Ching》

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鼠标左键按住旋转,右键按住平移,滚轮缩放
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