One of the secret instructions of the police authorities to their agents contains this article: "Always have on hand a hackney-coach, in case of emergency."
警署对警察的秘密指示中有一条，内容是“身边总得有一辆街车备用”。
This article introduces the design feature and performance test of DK9 motor coach with two-phase-double-circuits in Beijin Underground.
本文介绍了北京地铁DK9型电动客车采用两重两相斩波调压的设计特点和性能试验。
The article briefly introduces the application of color design and color constitution theory in the design of bus/coach color and bus/coach pattern.
简述色彩设计、色彩构成理论在客车色彩和图案设计中的应用。
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