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It must, of course, be remembered that wind turbines do not turn all the time.

必须记住的是，风力发电并不是时时刻刻都有的。

In chapter six, the structure design and manufacturing technology of elastic coat used for hydraulic turbines are studied.

第六章研究了水机涡轮流道弹性涂层的结构设计及制备工艺，同时介绍了弹性涂层在有关水电站的应用结果。

As the hot air rises, a powerful updraft is also created by the tower that allows air to be continually sucked through 32 turbines, which spin to generate power 24 hours a day.

当热空气上升时，一股有力的上升气流被可以让32个涡轮持续吸引的塔所生成，那些涡轮可以产生24小时的动力来纺纱。

Although vertical axis wind turbines have existed for centuries, they are not as common as their horizontal counterparts.

尽管垂直轴涡轮机已经存在几个世纪，但是并不如水平轴涡轮那么通用。

But the size and weight of large scale wind turbines become a problem because of the limit of traditional technology.

但是，受传统风机技术的限制，大功率发电机的尺寸和重量给陆上运输和安装都带来了很大的困难。

Operation characteristics of small scale wind turbines are analyzed,and a control system architecture which can implement integrated control over load tracking and battery charging is put forward in this paper.

0引言独立运行的小型风力发电系统要适应风能和负载的随机变化，满足负载用电及实现蓄电池充放电合理控制的同时，保证系统安全可靠地运行。

In fact, it is the only textbook that covers both types of Gas Turbines with great clarity and depth for students ande practising engineers.

事实上，它是唯一的教科书，涉及这两种类型的燃气轮机非常清晰和深入的学生安德执业工程师。

Airfoil profiles for wind turbines are mostly chosen from aviatic ones,but design requirements between the two types are different in many aspect.

风力机翼型主要选自航空翼型，但风力机翼型与航空翼型的设计要求存在许多的不同之处，所以，基于初始航空翼型以获得适合风力机的翼型的优化设计工作就显得十分重要。

Now it is being integrated to the BLADED software. All of these have prepared basic theories and design tools for Coning Wind Turbines.

目前该算法已整合到BLADED软件中，为绞接式风机的设计提供了坚实的理论基础和设计工具的准备。

The turbines will be equipped with new advanced rotors and blading.

涡轮机将被安装在新的先进的转子和叶片上。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。