P:2009-08-04 07:39:55
2
計(jì)算每項(xiàng)電容時(shí),是不是導(dǎo)體對(duì)導(dǎo)體的電容和導(dǎo)體對(duì)地線或金屬屏蔽或鎧裝的電容的耦合??關(guān)鍵是計(jì)算導(dǎo)體對(duì)金屬屏蔽或鎧裝的電阻時(shí),是否是計(jì)算對(duì)地線的還是對(duì)鎧裝的,因?yàn)閷?dǎo)體對(duì)地線的絕緣厚度和導(dǎo)體對(duì)鎧裝層的絕緣厚度不一樣。☉(yīng)該是絕緣厚度+內(nèi)襯層厚度是不?)
heat-resistant ceramic tube - 耐熱陶瓷管 (0) 投訴