哪项不是光纤接续的方法() A: 熔接 B: 直接 C: 磨接(Lucent) D: 压接(AMP、IBDN)
哪项不是光纤接续的方法() A: 熔接 B: 直接 C: 磨接(Lucent) D: 压接(AMP、IBDN)
An opaque material is () A: a material that can be seen through B: a translucent(半透明的) material C: a material that can not be seen through D: a lucent material
An opaque material is () A: a material that can be seen through B: a translucent(半透明的) material C: a material that can not be seen through D: a lucent material
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