The Antennae galaxies take their name from the long antenna-like "arms," seen in wide-angle views of the system.
触角星系因其长长的触角状旋臂而得名，用广角视野观察下这个“触角”很明显。
When you work at a computer, the keyboard should be at elbow height, so your upper and lower arms form an Angle of 90 degrees or more and your forearms are supported by armrests.
当你在电脑前工作时，键盘应该和肘部齐高，这样你的大臂与小臂成90度角或更大的角度，小臂可以放在椅子扶手上。
As shown in the side view above, both Angle extrusion arms are situated flush with the bottom of the Axle mount.
作为显示在侧视图以上，既角挤压武器是位于桥齐平的底部安装。
Finally the 180 degree Angle will produce a side of length 2 arms, the square root of 4.
最后180度的夹角的三角形形成第三边的长度是臂长的2倍，4的平方根。
Also insure that the other side of the Angle extrusion arms are welded as shown in the side view drawing.
还保证武器的挤压对方的角度被焊接的绘图显示在侧视图。
Race Walking: Walking at the rate of 5 mph with quicker steps and arms at a 90 degree angle.
竞走：双臂弯曲90度摆动快步走，速度约为每小时5英里。
Race Walking: Walking at the rate of 5 mph with quicker steps and arms at a 90 degree angle.
竞走：双臂弯曲90度摆动快步走，速度约为每小时5英里。
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