当初强韧可靠的晶体管取代了脆弱不稳的真空管，为电子元件带来了飞跃性的进步。
ELECTRONICS made a huge leap forward when the delicate and temperamental vacuum tube was replaced by the robust, reliable transistor.
在弗兰克·索看来，目前使用的大多数夜视设备装着一大堆电子元件，需要几千伏特的工作电压。 为了让画面更加逼真，夜视镜的镜头与镜头之间必须保持真空状态，因此整个装置比较沉重。
Most night vision devices today use massive amounts of electricity -- often several thousand volts, according to So -- and heavy, glass lenses that maintain a vacuum to make the night come alive.
广泛适用于铝、铜、钨、镍、铁、不锈钢等多种金属片、丝、棒的焊接以及电池，电真空器件，电子元件，小五金和热工测量仪表内部结构的装配和焊接。
Widely used in the welding of aluminum, copper, iron, stainless steel, and some vacuum wares, electronic components and the inner structures of the thermal measuring instruments.
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