phrase : physics coeducation : electronics : decline Electronic : metallurgy : waterpower > breakage
Contents
No. 1
  Dielectric loss in the strong electric field dielectric properties of the original phenomenon. Solid dielectric breakdown occurs after melting or burning of the channel, or a mechanical injury of the crack; gas and liquid dielectric breakdown occurs when the spark. Voltage breakdown occurred and material type, thickness and the use of temperature, pressure and other factors.
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jī chuān
  Hole in the ...
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No. 3
  The boat was enemy fire along the waterline Department Breakdown
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No. 4
  A hole in the wood, or as soon as the birds pecking movements - also known as "piercing"
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No. 5
  Insight; penetrated. "Novel Monthly" No. 1, 1981: "His thoughts were the eyes of the elderly who have never met before breakdown, and burst into sparkling fragments floating, drifting into the depths of memory, drifting in a foreign land after a long soul."
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No. 6
  击穿---绝缘物质在电场的作用下发生剧烈放电或导电的现象叫击穿。 例如,平常我们使用的验电笔中的氖管发光,就是氖管两端的电压超过70V而被击穿。 电容器的结构特性与作用
  1.电容器的结构特性 电容器是由两个相互靠近的金属电极板,中间夹一层绝缘介质构成的。在电容器的两个电极加上电压时,电容器就能储存电能。
  1.电容器
  (1)电容器:两块相互靠近又彼此绝缘的导体组成电容器.电容器可以储存容纳电荷.
  (2)电容器的带电量:一个极板所带电量的绝对值.
  (3)电容器的充、放电:
  ①充电:使电容器带电的过程称为充电,充电后两板带等量异种电荷.
  ②放电:使充电后的电容器失去电荷叫放电.
  2.电容:
  (1)定义:电容器所带的电量与两极板间电势差的比值叫电容.定义式:
  (2)物理意义:电容是描述电容器储存电荷本领大小的物理量,在数值上等于把电容器两极板间的电势差增加1 V所需充加的电量.
  注意:电容C由电容器本身的构造因素决定,与Q、U无关.
  (3)电容的单位:法.符号F. 1 F=106 μF=1012pF
  3.平行板电容器的电容C:与平行板正对面积S、电介质的介电常数ε成正比,与极板间的距离d成反比.
  平行板电容器电容的公式:C= εS/(4πkd).
  式中k为静电力恒量.此式为平行板电容器的决定式,不难看出,电容器的电容大小是由电容器本身的特性决定的.电容是描述电容器的特性的物理量,与电容器带电多少、带不带电荷无关.
  电子电路中,电容器只能通过变化电流,不能通过直流电的,在电路中起着“通交流,隔直流”的作用。电路中,电容器常被用作耦合、旁路、滤波等,都是利用它“通交流,隔直流”的特性。那么交流电为什么能够通过电容器呢?我们先来看看交流电的特点。交流电不仅方向往复交变,它的大小也在按规律变化。电容器接在交流电源上,电容器连续地充电、放电,电路中就会流过与交流电变化规律一致的充电电流。电容器的选用涉及到很多问题。首先是耐压的问题。加在一个电容器的两端的电压超过了它的额定电压,电容器就会被击穿损坏。一般电解电容的耐压分档为6.3 V,10 V,16 V,25 V,50 V等。
English Expression
  1. :  arcing
  2. n.:  breakage,  breakdown,  disruption,  flashover,  puncture,  sparking,  breaking down,  stave in,  hole,  peck; breakdown; puncture
  3. vt.:  stave
Related Phrases
circuit cheaterzener breakagenenerbreakdown
avalanchevoltage break downdecline electronic technologyoxidative horizon