Pantograph and over-head contact line must maintain good contact and reliable by the current.

高速铁路要求受电弓与接触线必须保持良好的接触和可靠的受流。

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Must always maintain a professional image at all times, be friendly and smiling at all times when in contact with guests and staff alike.

随时保持专业的形象，和客人及员工打交道时，态度友好，面带微笑。

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Therefore, the design force must be increased to ensure that the end-of-life force is adequate to maintain good electrical contact.

因此，必须增加设计力以确保末期触点压力足以维持良好的电气接触。

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