起动

According to the principle of mechanics, with the consideration of the gravities of coal dust particles and liquid droplets, coal dust size and humidity, under the condition of force balance when the coal dust was raised, the authors obtained a theoretical formula for the threshold velocity of coal dust with humidity.

作者根据力学的基本原理，考虑颗粒和液滴重力、煤粉颗粒尺寸和湿度的影响，利用煤粉颗粒起动时的力平衡条件，推导出在风的作用下，具有一定湿度的煤粉颗粒开始扬起的起动风速的理论表达式。

Based on the analysis of engine start torque trait, a few start schemes of induction machine are compared.

在分析发动机起动转矩特性的基础上，比较了异步电机的几种起动方案。

The subjects of this study are 11 male high school tuggers(16.8±0.99 year old, 171.59±3.18cm, 70.14±2.65kg, trained for more than 2 years and having used the plyometric strength training machine of Tug-of-war for 8 weeks). We collected the related parameters of Defend Fast Break, and Attack Fast Break before and after the training for our study and tested it by " pair-data sample t test ".

研究的对象为11名优秀高中男子拔河选手，平均年龄16.8 ± 0.99岁；身高171.59 ± 3.18 公分；体重70.14 ± 2.65公斤；训练经历二年以上，并利用拔河增强式肌力训练机进行为期8周的增强式肌力训练，以拉力计（采样频率为600Hz；采样时间为5秒）收集个人分别在训练前、后防御起动步与攻击起动步之的拉力曲线相关参数，作为本研究之研究范围，并以成对样本t考验进行考验（α=。05）。

See "e-paper" on page 1986, a concept of "Open-phase Motor Protection Discussion Summary," International Electrotechnical Commission to IEC202-1 low-voltage motor starter ② set out by the two-phase motor rated current up to 1,15 times rated current , while the third phase by 0.9 times the rated current to 0, the starter should be in action within 2h.

见《电子报》1986年1观页《电动机断相保护讨论小结》入国际电工委员会IEC202－1低压电动机起动器）中规定之②在电动机两相由额定电流升至1、15倍额定电流，而第三相由0.9倍额定电流降至0时，起动器应在2h内动作。

Inverse-time delayed overload relay, the 3VU16 and 3VF1 can also be supplied with instantaneous overcurrent releases only.

于起动器组合装置本身具有过载保护，因此用于起动器组合的3VU16和3VF1只安装过电流瞬时脱扣器。

Inverse-time delayed overload relay, the 3VU16 and 3VF1 can also be supplied with instantaneous overcurrent releases only. Circuit-breakers and

于起动器组合装置本身具有过载保护，因此用于起动器组合的3VU16和3VF1 只安装过电流瞬时脱扣器。

CJX2－d Series AC contactor is mainly used in the ciruit AC 50HZ (or-60HZ),rated insulating voltage is 380V unde AC-3 usage it can be combined with suitable thermal overload equipment into a electromagnetic starter to protect the circuit that may appear overload The comactor can be equipped with builbing block style auxiliary con tact group、air delaying contact、Interlonking mechanism and so on ac cessories to combined into time relay、reversible comtactor and star-delta starter.

CJX2-d系列交流接触器主要用于交流50HZ（或60Hz，额定绝缘电压为660V，在AC-3使用类别下额定工作电压为380V时额定工作电流至95A的电器中，供远距离接通和分断电器，并可与适当的热过载电器组成电磁起动器以保护可能发生过载负荷的电路。接触器可组装积木式辅助触头组、空气延时头、联锁机构等附件；组成延时继电器、可逆接触器、星三角起动器。

In this paper, a DC pre-excitation strategy, which limits the starting current and enhances the electromagnetic torque via establishing the flux linkage before starting process, is proposed to the three-level inverter under analysis on the mechanism of the above large current.

该文在探究上述情况产生原因的同时，提出了一种应用于三电平变频器-电机系统的直流预励磁方案，在电机起动前预先建立起电机磁场，有效地遏制过大的起动电流。

On the base of the algorithm,the initia l power of the main motor of the MDQ 1800 low level high speed palletizer determ ined by load power is checked and modified according to time criterion, heating criterion and starting torque criterion and a new met...

在此基础上，对按照负载功率确定的初始功率按发热判据、时间判据和起动转矩判据进行了校核和修改，获得了一种高频起动的异步电动机的功率选择方法。

Pros and cons of raising the interpolation method and is slightly different, a positive start to be positive by the interpolation of its flock, the formation of green velvet, the back and by the need to start and positive by the Cashmere and slipping under its help to by efforts and self-rod, forced to back down by the sink, forming the back of green velvet.

正反两面的插法和起绒方法稍有不同，正面的须起动正面绒经插于其下，形成绒坯，背面的须同时起动地经和正面绒经，插于其下，借助地经的努力和金属杆自重，迫使背面绒经下沉，形成背面绒坯。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。