ความคิดเห็นที่ 3
Based on all of engineering textbooks that i study
for the x-plane...it is called " the x-axis"
same thing for the y-plane...it is called the "y-axis"
note: x-plane and y- plane refers to ระนาบในแนวในแกน x and y, respectively....
จากคุณ :
minmin
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9 พ.ย. 46 17:07:34
A:142.3.120.254 X:
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