棘手

And in the process control, will face a difficult problem, is effective in resolving the issue of VCM distillation, the quality of refined products for the VCM is especially important in light of our factory production processes perchlorethylene characteristics and the actual situation of VCM a distillation of Frequently Asked Questions.

而在该过程控制中，会遇到一个个棘手的问题，能否有效解决好VCM精馏问题，对于VCM精制产品质量则显得尤为重要，结合我厂氯乙烯生产的工艺特点和实际情况，对VCM精馏常见问题作一浅析。

I never had a thing perplex me so.

这事可真棘手，这种情况对我来说还从没发生过。

The performance of magnetic levitation is determined mainly by the characteristic of its controller and solving the problems of the high precision, high esponse frequency, output immune from the disturbance, the parameter perturbation and the uncertain factors from outside is very difficult. The traditional methods can not meet the needs of the system. So it has great significance to study the control method of magnetic levitation.

磁悬浮系统性能的优劣很大程度上取决于控制器的特性，高精度、高响应频率和输出不受外界干扰的特性以及磁悬浮中参数的摄动和外界不确定的干扰因素都是难以解决的棘手问题，传统控制难以满足系统要求，因此对控制方法的研究有其非常重要的意义。

The performance of magnetic levitation is determined mainly by the characteristic of its controller and solving the problems of the high precision, high response frequency, output immune from the disturbance, the parameter perturbation and the uncertain factors from outside is very difficult. The traditional methods can not meet the needs of the system. So it has great significance to study the control method of magnetic levitation.

磁悬浮系统性能的优劣很大程度上取决于控制器的特性，高精度、高响应频率和输出不受外界干扰的特性以及磁悬浮中参数的摄动和外界不确定的干扰因素都是难以解决的棘手问题，传统控制难以满足系统要求，因此对控制方法的研究有其非常重要的意义。

Of course pesky independent shareholders are supposed to be what exchanges and markets are all about.

这些棘手的独立股东当然是交易和市场的全部。

However, in another paper published the same month, Einstein also made several observations on a then-thorny problem, the photoelectric effect .

不过，在另一份文件公布的同一个月，爱因斯坦还提出了一些意见对当时的棘手问题，光电效应。

If the pleura are irritated , the two layers become uneven and the fluid may become sticky.

如果胸膜是恼火，两层成为不平衡和流体可能成为棘手的。

Whenever there's prickly situation, this dandruff-laden porcupine is sure to be far, far away.

只要碰到棘手的事，这为头屑而苦的豪猪绝对会躲得远远，远远的。

It's a political hot potato.

它是个棘手的政治问题。

For them, real estate has become a hot potato.

对于它们来说，房地产是一个很棘手的问题。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。