double arrowhead
双箭头
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Line that can have a double arrowhead appear at either end, or both ends.
一端或两端带有双箭头的直线。
youdao
Line that can have a double arrowhead appear at either end, or both ends. Use the control handle to resize line ends.
一端或两端带有双箭头的直线。使用控制手柄可调整线端大小。
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