《几何原本》中的定义:当一条直线和另一条横的直线交成的邻角彼此相等时,这些角的每一个被叫做直角,而且称这一条直线垂直于另一条直线。角度比直角小的称为锐角,比直角大而比平角小的称为钝角。
n. right-angle
misc. right angle ; a right angle
脚踝务必屈成直角(Right angle),跟腱务必伸直(Straight),依旧这个状貌少焉,然后复原成两腿上举样子,再缓缓做这个(This)作为。一再15-20次。
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... vertex angle 顶角... vertical angle 直角... vertical boiler 立式锅卢,立式汽锅...
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直角三角形 [数] right triangle ; right angled triangle ; rectangular triangle
直角边 cathetus ; leg ; right-angle side ; cateto
直角尺 square ; try square ; square master ; right angle ruler
直角板 angle plate ; right angle plate ; l-square
直角坐标系 [数] rectangular coordinate system ; Cartesian coordinate system
直角梯形 right trapezoid ; right-angled trapezoid
直角龙 Orthogoniosaurus
直角压陷 corner shear drop ; corner r shear drop
直角度 squareness ; Perpendicularity or Squareness ; Squarencess tolerances
为了描述人类,他应该保持手掌与地面成直角。
In order to describe human beings, he should keep the palm of his hand at a right angle to the floor.
球呈直角偏离弹了出去。
直角为90度。
May hurt a little bit, but try as much as possible to create a 90 degree angle.
可能有点痛,尽可能形成一个直角。
Now take these two fingers-- the middle finger and the thumb-- and as much as possible, from that 90 degree angle, create a circle.
再让这两个手指-,中指和姆指-,尽可能保持直角时围成一个圆圈。
And, moreover, they are at right angles to one another that we've learned.
更多的是,根据我们所学的知识,它们都是和另外一个互成直角。
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