查询词典 negative angle

Aimming at the fuel control requirement of micro-turbojet,the automobile's electric fuel pump with adaptable improvement is chosen as fuel-feed system.The performance of fuel pump and the technical difficulty of flux control as the speed of pump doesn't be measured are analyzed.Using Philips 83C552 MCU as the main control chip,the system adopts voltage negative feedback combined current compensation instead of rotation speed negative feedback and a PWM convertor to design the flux closed loop control system.

针对微型涡喷发动机的燃油控制要求，选用汽车用电动油泵进行适应性改进作为供油执行装置，详细分析了电动油泵的特性及泵转速无法测量情况下流量控制的技术难点，并以83C552单片机为核心，采用电压负反馈加电流补偿代替转速负反馈、电机通过PWM驱动的方法设计电动油泵流量闭环控制系统。

Then A is positive semidefinite, negative definite and negative semidefinite.

则A是半正定，负定，半负定的。

Negative sign symbol:~~Tap a symbol to indicate negative numbers.

负号：~~点击用于表示负数的符号。

The negative lead should be connected to the negative terminal of a battery.

负面导致应连接到终端的负面一个电池。

These switches reside in series with the negative terminal of the cell and the negative terminal of the battery pack.

居住在这些开关与细胞的负极和电池组的负极端子系列。

Similarly, treble amplifier negative is connected to the negative HF terminal on the speaker.

同样，把高音功放的人否定连接到在音响上负HF终端。

An apparatus and method for charging a battery pack having a positive terminal (18), a negative terminal (20), and a third terminal (22) is disclosed, where a thermistor (24) is positioned across the negative terminal and the third terminal.

一种电池的充电方法和装置，该电池具有一个正端（18）、一个负端（20）和一个第三端（22），其中在所述负端和所述第三端之间设置一个热敏电阻（24）。

H〓, S〓 and G〓 within experimental temperature range (440～600℃) all are negative for Zn-Mn, Zn-Ti, Zn-Ni, and Zn-Cu baths, and a negative peak exists as variation of composition.

若只考虑外观质量，水冷或空冷时的最优镀液分别为Zn-0.3Mn-0.15Ti-0.1Ni-0.01Cu和Zn-0.1Mn-0.05Ti-0.05Ni-0.01Cu。

Experimental results show that the different substituted location and different substituted group on benzene cycle would result in the diversity of reduction properties of substituted aryl nitrobenzene. Substituted nitrobenzenes with withdrawing group will be reduced at more positive potential, while those with repelling group will be reduced at more negative potential. In addition, the reduction potential of nitro group of o-nitrobenzene shifts more negative due to the effect of space resistance.

结果表明，芳族硝基化合物在苯环上的取代基位置不同以及在相同位置上取代基的种类不同均可使各芳族硝基化合物的电还原性能发生较大差异：吸电子取代基在电还原过程中电位较正，推电子取代基的电还原电位较负：邻位取代基在反应过程中由于空间位阻效应，苯环上的硝基在电还原时电位往负方向移动。

There are no known negative side effects of negative ions.

没有已知的负离子的负面影响。

That snake Alaric named Archbishop...

庇护。。。那个毒如蛇蝎的Alaric被命名为大教主。。。

You have done lots of magical things to be amazed at.

你做了很多神奇的事物感到惊讶。