在专业音响系统中，各种接插件是不可缺少的。不少专业音响工作者一提到接插件就首先会想到“卡侬”这一名词。我们知道“卡侬”一词来自英文单词“Ｃａｎｎｏｎ”的音译，意指圆形，或圆筒物体。因此，如果改用意译，应将“卡侬”插头称为“圆形”插头比较贴切。在国际标准Ｉ In the professional audio system, a variety of connectors are indispensable. Many professional audio workers mention the connector first thought of “cannon” the term. We know that the word “cannon” comes from the transliteration of the English word “Cannon”, meaning a circle, or a cylinder. Therefore, if you use the free translation, should be “XLR” plug called “round” plugs more appropriate. In International Standard I