beam center

基本解释

The azimuthal phase term of the LG modes results in helical wave fronts. The phase variation along a closed path around the beam center is .
LG模的角向术语来源于螺旋波前，相变量沿着一条封闭路径绕光束中心一周就。
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Results show that with the Gaossian beam's waist radius becoming smaller and interval between target image and gaussian beam center becoming bigger, output correlation peak value decrease.
为输出高的相关峰值，扩束准直光学系统输出的高斯光束腰斑半径应满足一定要求。
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Results show that the three kinds of soliton with or without a loading resistor have a similar character in self deflection, i. e. , the solitary beam center moves on a parabolic trajectory.
结果表明，无论加载电阻与否，这三种类型的光折变明孤子具有类似的自偏转特性，即孤子波沿一个抛物线轨迹运动。

On the grounds here you've got a stone from the Pentagon and a beam from the World Trade Center.
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