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J represents distance above reference point Y (top of mount bracket).
J代表距离参考点y的距离(安装托架顶部)。
youdao
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E-N-J-O-Y for I wish you can enjoy this course!
希望你真的能够参与本课程享受并有所收获！
youdao
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E-N-J-O-Y for I wish you can enjoy this course!
希望你真的能够参与本课程享受并有所收获！
youdao