查询词典 DC

The rise of temperature is a key factor to the performance of permanent magnet brushless DC motor.

摘 要：温升是影响永磁无刷直流电动机运行性能的一个关键因素。

A structure of miniature permanent magnet linear DC motor was presented in this paper.

介绍了一种微小型永磁直流直线电动机的结构，优化了结构参数，加工出样机并进行了试验分析。

And third, entries from a diary written mostly during a recentstay in Washington, DC, in which Mr Havel, by now in his early 70s, recordsamong other things his illnesses, his fondness for Americans, his admirationfor senatorial haircuts and his own pernickety dissatisfaction, as the bookgoes along, with not having got the subtleties of the record quite right.

第三部分大多是古稀之年的哈维尔近期在华盛顿市居住留下的日记，记录了他的病情，对美国人的喜爱，羡慕议员们的发型，和他吹毛求疵的不满。书中没有具体阐明这些记录的微妙用意

And third, entries from adiary written mostly during a recentstay in Washington, DC, in which MrHavel, by now in his early 70s, recordsamong other things hisillnesses, his fondness for Americans, his admirationfor senatorialhaircuts and his own pernickety dissatisfaction, as the bookgoes along,with not having got the subtleties of the record quite right.

第三部分大多是古稀之年的哈维尔近期在华盛顿市居住留下的日记，记录了他的病情，对美国人的喜爱，羡慕议员们的发型，和他吹毛求疵的不满。书中没有具体阐明这些记录的微妙用意

It was found that in the DC bias electric field, when the relaxation time of the hot-electrons in the electron-electron and electron-phonon interaction process is longer than the carrier life, the photoconductivity oscillation can be caused by the change of mobility in the process of optoelectronic transport, which is the main cause for the output electrical pulse to show oscillations.

分析了开关体内载流子的微观状态和输运过程，在直流偏置电场作用下，开关体内的热电子在电子-电子、电子-声子相互作用过程中，当它们的弛豫时间大于载流子的寿命时，光电子的输运可通过迁移率变化引起光电导振荡，这是开关输出电脉冲出现振荡的原因。

Objective To investigate the effect of narrow-band ultraviolet B phototherapy on the expression of CD1a and Ki-67 in psoriatic lesions.

目的 探讨窄谱中波紫外线治疗对银屑病患者皮损中CD1a+树突细胞（CD1a+DC）及Ki-67水平的影响。

It has been demonstrated that Ag presentation by receptor-mediated internalization of DCs can be enhanced up to 1000-fold, compared with fluid phase Ag pinocytosis.

业已证 实，DC是目前发现的功能最强的抗原提呈细胞，也是唯一能激活初始T细胞的抗原呈递细胞。

Another feature of electrolytic CAPACITOR s, both aluminium and tantalum, is that most of them are polarized and require a DC bias for correct operation - a reverse bias may do damage and will certainly increase leakage (unpolarized electrolytic CAPACITOR s, which may be biased in either direction, do exist but they are uncommon, and considerably larger than the polarized variety).

电解电容还有一个特点，那就是绝大多数都是有极性的，其两端必须施加直流电压才能正常工作。如果极性接反，电容就可能损坏，其漏电流也会增加。无极性电解电容虽然已经问世，但是相比之下不常用，而且外形尺寸也比有极性电容大。

Another feature of electrolytic capacitors, both aluminium and tantalum, is that most of them are polarized and require a DC bias for correct operation - a reverse bias may do damage and will certainly increase leakage (unpolarized electrolytic capacitors, which may be biased in either direction, do exist but they are uncommon, and considerably larger than the polarized variety).

电解电容还有一个特点，那就是绝大多数都是有极性的，其两端必须施加直流电压才能正常工作。如果极性接反，电容就可能损坏，其漏电流也会增加。无极性电解电容虽然已经问世，但是相比之下不常用，而且外形尺寸也比有极性电容大。

To speed up the fault diagnosis of electrical equipment analog PCB circuit, this paper uses the principle of DC fault dictionary and the areafault location method, improves the com- ponent model and circuit description program, thus studies analog PCB automatic fault diagnosis system.

为提高电子装备模拟印制板电路故障诊断的速度，本文使用直流故障字典法原理，运用区域性故障定位方法，改进器件模型和电路描述程序，设计了模拟印制板电路故障自动诊断系统。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。