... [pencil] 内有涂写物质芯子的木杆,一端露出削尖的芯子,另一端常有橡皮 [lead glass] 氧化铅含量高的玻璃,这种玻璃具有高的折射率和高的色散值 [plumb line] 一端有垂球或其他重物的线或绳,供确定垂直度用 ...
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protective lead-glass 防护铅玻璃
potash-lead glass 钾铅玻璃
lead glass goggles 铅玻璃护目镜
lead glass cerenkov counter 铅玻璃切伦科夫计数器
lime lead glass 钙铅玻璃
fluoroscopic screen with lead glass 附铅玻璃荧光屏
lead-glass window 铅玻璃窗
lead glass window 铅玻璃窗
zinc-barium-lead glass 锌钡铅玻璃
N glass that contains lead oxide as a flux 含铅玻璃
Unlike Venice’s soda glass, potassium and lead glass lent themselves well to engraving and cutting when cold, and became fashionable throughout Europe.
和慕拉诺的含碱玻璃不同,波西米亚和英国的玻璃制品冷却后,可以进行雕刻和切割,由此,风靡了欧洲大陆。
Including the radiation lead glass, lead plate glass.
包括防辐射铅玻璃,铅板玻璃等。
Results The shielding efficacy was 95% by the lead glass and plumbic suit double protection, the X ray radiation was reduced markedly.
结果经铅玻璃防护屏和铅防护服进行双重防护后,其屏蔽效率达到95%,可显著减少X射线的辐射量;
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