双动

Various types of elevators, according to the drive system, theexchange two-speed elevators, escalators VVVF exchanges, exchangeregulator speed elevators, because of its low cost.

摘要电梯的种类多种多样，按拖动系统来分，有交流双速电梯，交流变频调速电梯，交流调压调速电梯，因为它的成本低。

In this paper,a bi-mass model of metal V-belt type CVT system is established,and its dynamic characteristics have been studied in both theory and experiment.

本文建立了无级变速传动系统的双质量模型，从理论和试验两方面研究了金属带式无级变速竹动系统的动态特性。

Features: the series is hard backing horizontal dynamic balancing machine, using the wheel backing, universal coupling to drive, the popular style is two-speed electric - driven,"A" is variable-frequency electromotor plus inverter speed, industrial control computer data processing, color screen real-time shows the value of the amount of unbalance ,phase and real-time rotational speed, bases have adopted the overall foundry, stability is good.

特点：该系列是硬支承卧式动平衡机，采用滚轮支承，万向联轴节驱动，普通型为双速电机驱动，"A"型为变频电机加变频器调速，由工业控制计算机进行数据处理，彩色屏幕实时显示不平衡量值，相位角和实时转速，床身均采用整体铸造，稳定性好。

The results computed by ROTOR are compared with those by the software of Westing House Corporation and experimental result.

利用这些方法编制了双精度计算程序RTR，该程序不仅能计算临界转速，还能计算进动转速，能够直接计算出结果。

The great black hawk flaps the giant double wing to shell suddenly in the red ray.

黑色的巨鹰拍动着巨大的双翅骤然轰击在红色的光芒上。

However, experiment indicate that the result of the detection method is inaccurate and anamorphic.

本文讨论了双板分动式侧滑台对轴间侧滑量的检测，在假定条件下，通过数学计算可求出轮间和轴间侧滑量，但实验结果却表明这种检测方法测量结果重复性差、失真较大。

In order to control the insufficient transition displacement of the long rail components to ensure the high regularity of turnout and its locking reliability, a transition design method for long rail components and double limb elastically bendable turnout frog structure was established using the finite element method, a new roller sliding platform was developed, and the transition traction point layout and stroke design were optimized.

为控制长大轨件转换不足位移，确保道岔的高平顺性和锁闭可靠性，运用有限单元法进行长大轨件及双肢弹性可弯心轨结构的转换设计，研制出新型辊轮滑床台，并优化了转换牵引点布置及其动程设计。

To this day I occasionally pull the shoe out of cold storage to ogle it and soak in its devastatingly beautiful and utterly elegant design.

直到今天我还会偶尔从许久未动的仓库里拿出这双鞋，注视并欣赏着它那惊艳的美丽和绝对一流的设计。

Fainter and fainter grew her song, and she felt something choking her in her throat.

夜莺的声音越唱越模糊了，她的双翅拍动起来，她的眼上起了一层薄膜。

Before fed with antibiotics, the predominant intestinal aerobic and facultative anaerobic bacteria were Enterobacteriaceae, Flavobacterium, Acinetobacter and Vibrio.

投喂药饵前，鲤肠道好氧及兼性厌氧菌优势菌群为肠杆菌科、黄杆菌属、不动杆菌属和弧菌属；厌氧菌群中双歧杆菌属最多，乳杆菌属次之，拟杆菌属最少。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。