SD rats were divided into 3 groups: control, scald and electret group.
将大鼠分成对照组 、 烫伤组和驻极体实验组.
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The melt blown nonwoven technology, the electret theory and electret nonwoven are introduced in this paper.
系统介绍了非织造布熔喷工艺 、 驻极化理论以及驻极体非织造布.
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It'specilizes in manufacture of carious circle receiver, electret receiver and accessories of various telecommunication product.
专业生产各种动圈受话器 、 驻极体话筒及多种通信产品配件.
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The electret microphone tester is used to test electret microphone's sensitivity and frequency response.
驻极体传声器测试仪是用来测试传声器的灵敏度及频率响应的.
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Electret air filter material has superior filter performance, as ideal filter material for coal - dust stained yarn.
驻极体空气过滤材料具有优良的过滤性能, 是治理“煤灰纱”的理想过滤材料.
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