Pumps installed for standby duty or parallel operation shall be of identical design.

泵安装后备值班或并联运行应以相同的设计。

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It is very important to study the propagation of premixed flame in a round tube or parallel channels for the safe operation and application of many industrial combustion facilities and systems.

研究预混火焰在圆管或平行通道中的传播，对许多工业燃烧装置或系统的安全操作和实际应用都具有重要的意义。

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Because of the output of the UPS (or Inverter) is AC, its parallel operation is more difficult than DC supplies.

由于UPS(或逆变器)的输出是正弦交流电，它的并联运行比直流电源复杂的多。

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Adding Biogen Idec would graft labs in California and Massachusetts to this just-created construct, or else shift them into a parallel research and development operation Pfizer is just starting to build from close to scratch out of San Francisco.

FORBES: Should Pfizer Buy Biogen? No.