用哑数据(常是零或空白)充一个数据块。

To fill a block with dummy data, usually zeros or blanks.

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在执行工作之前，确保检测管道连接以及是否液路中是否有零件的损坏，因为液路在充压过程中将会有高压产生。

Make sure to check the pipe connections and whether or not any hydraulic circuit parts are damaged before performing work, as the hydraulic circuits become highly pressurized during air bleeding.

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圆锥形零件是曲面类零件拉深成形中较为典型的零件之一，对其充液成形的研究具有实际意义。

Since conical part is one of the typical curved parts in sheet metal drawing, research on it has actual significance.

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