Range hypothesis vent plug and tube joint is not correct, then in the transformer oil injection will constitute a bubble chamber.

假设放气塞和管接头的方位不正确，那么在变压器注油以后会构成气泡腔。

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It is available in three configurations, including power supply board only, a board with a plug-in transformer, or a board with an enclosure and a plug-in transformer.

它有三种配置，包括电源板，插件变压器板和一个插件变压器。

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The heater is composed of a housing, a heating filament arranged in the housing, and a switch, a transformer and a power plug sequentially connected with the heating filament.

加热器由外壳，设于外壳内的加热丝，以及与加热丝依次连接的开关、变压器、电源插头构成。

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Once, before dual voltage became the standard for consumer electronics, there was plentiful physical evidence of the fact that if you plug in across systems without a transformer, the result is either a flame-out or a non-starter.

FORBES: On China Swagger and the Smell of Burning Insulation