清单9从概念角度说明这个指令的作用。
From a conceptual standpoint, Listing 9 shows what the instruction does.
这些设备包括机械转轴，响铃，灯号，以及同步传递火炮指令及表达角度的系统。
These include mechanical shafting, buzzers, light signals, and synchro systems for transmitting gun orders and other quantities that may be represented as angular displacements.
概括介绍欧盟现有的巴士与客车指令，以及已提出即将实施的指令，从巴士与客车制造商和运营商的角度透视这些指令对市场的影响。
This article introduces the existing EU legislation, in especial on Directives, as well as proposed and forthcoming legislation impacting the bus and coach market from the operators perspective.
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