Simulation computation of pressure of arcchute switch electric appliance in middle and small scale
中小型开关电器灭弧室压强的仿真计算

Expression to compute the arccosine of.
要计算反余弦的表达式。

The Lujiaogou Conglomerate is the sedimentary response to arccontinental collision during the earliest of Silurian.
鹿角沟砾岩标志著弧陆碰撞最早发生于早志留世早期。

The inverse function of that restricted cotangent function is called the arccotangent function.
被限定的余切函数之反函数叫做反余切函数。

The inverse function of that restricted cosine function is called the arccosine function.
被限定的余弦函数之反函数叫做反余弦函数。