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The availability of detailed acoustic array measurements on the same turbines provides a unique possibility to assess the predictions not only in terms of source spectra and overall sound levels, but also in terms of the noise source distribution in the rotor plane as a function of frequency and observer position.

详细的音响列阵测量的可及性在同样涡轮提供一种独特的可能性估计预言不仅根据来源光谱和整体声音强度，而且根据噪声源发行在电动子飞机作为频率和观察员位置功能。

These turbines are attached to a gear box, which is connected to an electrical generator.

这些涡轮连接到工具箱，被连接到一台电子发电器。

GE supplied two gas-turbine generators at a local power plant and wind turbines for a project in Hebei that supplies power to the capital.

通用电气提供了两座涡轮发电机的本地电厂，并在河北建设了一个风力电厂为首都供电。

More wind turbines are made there than anywhere else, and China is also now the world's leading manufacturer of solar photovoltaic cells.

中国的风力发电机要比全球其他地方都来得多，而中国也是全球太阳能电池制造之冠。

In order to reduce the fan system noise of airconditioner outdoor machine, the basic theory and control methods of the aerodynamic noise of turbines have been studied in detail.

本研究以降低空调器室外风机噪声为目标，从气动噪声机理、降噪措施对叶轮机构气动噪声进行了详细研究，并在研究中取得了实际的降噪效果。

This paper describes the application of a semi-empirical prediction method for trailing edge noise to calculate the noise from two modern large wind turbines.

本文描述一个semi-empirical 预言方法的应用使后缘噪声计算噪声从二个现代大风涡轮。

During a low speed, the pitch angle is a constant, wind turbines keep on the optimum speed ratio between the pitch and wind so as to absorb the maximum energy.

该风力机在低风速时桨距角不变，保持最佳叶尖速比以获得最大风能；在高风速时储存或释放部分能量，桨距角仅完成限制最大输出功率，减少机械应力，风能储存在风力机机械惯性中，减少力矩冲击。

Hybridisation could also be done the other way around, by using steam generated from solar-thermal collectors to help drive the turbines at existing coal or gas plants.

同时，也可以采取其他方式来建造混合装置体系：用太阳热能收集器中得到的蒸汽来推动煤厂或是天然气厂现有的涡轮机进行发电。

Hybridisation could also be done the other way around, by using steam generated from solar-thermal collectors to help drive the turbines at existing coal or gas plants.

混合能源发电还可以通过另外一个途径来实现，利用太阳热能采集器产生的蒸汽来帮助驱动现有煤电厂或气电厂的涡轮机。

"I thought if there was any industry that was bulletproof, it was that industry," said Rich Mattern, the mayor of West Fargo, N.D., where DMI Industries of Fargo operates a plant that makes towers for wind turbines.

&我曾经认为如果有一个产业不受影响，就是它，&西法戈市长说。在这里，DMI运营一家工厂，为涡轮机建造塔。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。