By using experiment method,the required power and the heat transfer coefficient of helical ribbon impeller in heat transfer from the shell to inner layer of mixed fluid was discussed in this article.
用实验方法讨论了螺带叶轮对从罐壁到混合液体内层传热时,所需功率和传热系数的影响因素,得出了螺带式搅拌桨直径与搅拌罐直径之比d/D=0。
It does not favor ECL due to their high power needs.
它不适合于ECL电路，因为电路所需功率较高。
Total power(KW) needed ÷ singlle element power=the quantity of elements that should be installed.
所需总功率(KW)÷单支元件功率＝应安装元件数量。
Base-load power is the minimum required to keep things ticking over-the demands of three o'clock in the morning, or thereabouts.
基本载荷功率是保持正常运转的最小功率——凌晨三点所需的电能，或者与之相当的电能。
You need to have tremendous power in your arms and legs to be a good rower.
电力，动力；功率。通常是指制造电力或机械所需的能量。
The design of pipes depends on comparative power requirements to deliver a given sediment discharge.
在设计管道时，必须比较其对于输送一定量的泥沙所需要的功率。
Reactive power needs depend on the voltage gradient, which is a function of the network topology.
所需的无功取决于电压的增减率,其是网络拓扑的函数。
Calculate the total length of electric heating cables needed acco-rding to total heat loss of pipes or tanks and the chosen power per meter.
根据管道或容器罐体总散热量和选定的电热带米功率，计算所需电热带总长度。
Generator design considerations determine the field current, field voltage, and consequently, the power required for excitation.
发电机的设计要求决定了励磁电流、励磁电压,从而也决定了励磁所需的功率。
SuperCables would carry many times the power of existing transmission lines, which helps the economic case for burial.
超级电缆可承载的功率比现有的传输线路高许多倍，对地下化所需的成本也有帮助。
The field current required to produce a constant voltage at the generator terminals varies over a wide range for various loads and power factors.
稳定发电机端电压所需要的励磁电流,因负荷和功率因数的不同,其变化范围很大。
The electric power required by an appliance or a device.
瓦数仪器或装置需要的电功率
In both cases large power sources are required.
在两种情况中都需要大功率的射频源。
Energy Conversion-Demanding Challenges for Power Semiconductor Industry
能量转换——功率半导体产业的需求挑战
Wireless spectrum is a limited resource.
无线通信所需要的频率资源是有限的。
Great persistence is necessary for success.
坚韧不拔是成功所必需的。
The server does not support the functionality required to fulfill the request.
服务器不支持满足请求所需的功能。
Server does not support the functionality required to fulfill the request.
服务器不支持完成请求所需的功能。
Evaluate and select desired change and configuration management features
评估并选择所需更改和配置管理功能