vacuum metal

基本解釋

Identifying the vacuum property of metal materials is very helpful to the manufacture of electronic devices.
鑒別電真空用金屬材料真空性能的好壞，對電真空器件的生產有直接幫助。
Purifying selenium by vacuum distillation. Metal selenium purification is on the base of different elemental volatility.
真空蒸餾提純硒利用元素的揮發(fā)性不同進行金屬硒的提純。
According to the technology and configuration of the vacuum braze welding metal honeycomb parts, the technique of ultrasonic inspection for them was studied.
針對金屬蜂窩真空釬焊件的工藝及結構特點，探討了利用超聲波法對其質量進行檢測的可行性和可靠性。

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).
FORBES: Big Firm Innovators: What Large Companies Can Do to Be Just as Innovative as Small Entrepreneurial Ones