vacuum metal

基本解释

Identifying the vacuum property of metal materials is very helpful to the manufacture of electronic devices.
鉴别电真空用金属材料真空性能的好坏，对电真空器件的生产有直接帮助。
Purifying selenium by vacuum distillation. Metal selenium purification is on the base of different elemental volatility.
真空蒸馏提纯硒利用元素的挥发性不同进行金属硒的提纯。
According to the technology and configuration of the vacuum braze welding metal honeycomb parts, the technique of ultrasonic inspection for them was studied.
针对金属蜂窝真空钎焊件的工艺及结构特点，探讨了利用超声波法对其质量进行检测的可行性和可靠性。

Lin, Justin, and Marie examined the semi-conductor industry, where the initial reliance on vacuum tubes was replaced by bipolar technology, which in turn was replaced by complementary metal-oxide semiconductors (CMOS).
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