03:05 荧光灯启辉器工作过程-How a Fluorescent starter works,双金属片 02:05 照明历史-白炽灯变黑老化过程-Blackening of an Incandescent Bulb 00:19 照明历史-GE Mazda品牌灯泡-Lighting 2 - The Mazda Lamp(非马自达车灯) 07:26 照明历史-早期灯泡的电气绝缘-Knob and Tube - early electrical insulation...
PURPOSE:To prevent contamination and deterioration of a cock grease or vacuum pump oil of an evacuation circuit, by making halogen compounds of solid at room temperature into a liquid or a solution, impregnating a powder (molding) such as halides and carbides with the liquid or solution, and ...
23. to set burning, as a candle, lamp, fire, match, or cigarette; kindle; ignite. 24. to turn or switch on (an electric light): to light the lamp. 25. to give light to; furnish with light or illumination: to light a room. 26. to make (an area or object) bright with or ...
___electricity(电), it is easy for us to___an___or a TV. But where does all that electricity come from? Most power plants (发电厂)___electricity by using___,___,___, and nuclear energy(核能).Other plants make electricity by using sunlight,___,water, or even___! 27.发电 ...
How to Make a Good Impression With Horsetails Finally, about ten years ago, I found that blackening the stems over an oil lamp emitting soot works rather well, at least in capturing the form and... WD Winter - 《Pteridologist》 被引量: 0发表: 2021年 ...
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A guillocheur must know his machine by heart, as the instructions for use were last seen two centuries ago. The choice of decoration depends on the shape of the piece to be worked – in other words whether it is a caseback, a bracelet, a portion of the dial, or an oscillating weight...
But that night, while she was making clothes for us under the weak light of an oil lamp, I couldn't help___stories I'd heard that day. She listened___At first, since in her eyes professional storytellers were smooth-talking(花言巧语的)men—___good ever came...
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19 There were three bowls made like almond blossoms on one branch, with an ornamental knob and a flower, and three bowls made like almond blossoms on the other branch, with an ornamental knob and a flower—and so for the six branches coming out of the lampstand. 20 And on the lampst...