The typical trench system in World War I consisted of a series of two, three, four, or more trench lines running parallel to each other and being at least 1 mile (1.6 km) in depth.

第一次世界大战时典型的堑壕体系由2至4条以至更多的一系列壕沟组成，壕沟之间彼此平行，而且纵深可以达到1英里（合1.6公里）。

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Secondly, on the parallel computer system, we implement the compile, connection and running of the message passing parallel program model MPICH.

其次实现了消息传递并行编程模型MPICH在并行计算机上的编译、链接与运行。

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The discrete time sliding mode controller design for stability and active power distribution of a two-generator parallel running system is discussed in this paper.

基于离散滑模控制理论设计了船舶电站双机并联系统的稳定和有功分配控制器。

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Mario Ploner, the managing director of Tecnomeccanica Biellese, says the ship-based system will use external booms running parallel with the vessel's sides to channel oil onto wool that has been spread over the surface of the sea.

ECONOMIST: Monitor