注：每一块面板清晰显示三相五线制电源的母线、支线。
Remark: every wire of the three-phase five-wire system is clearly indicated on the front panel.
加线为较短的水平线，用以表明音调在五线谱之上或之下。
Ledger lines or leger lines are short horizontal lines used to indicate notes that lie above or below the stave.
结合繁五线施工实际对钢波纹管涵的施工工艺和技术要求进行了探讨。
Combined with the construction practice of Fanwu Highway, the paper introduced the construction technology and technical requirements of steel corrugated pipe culvert.
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