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模的角曏術語來源於螺鏇波前，相變量沿著一條封閉路逕繞光束中心一周就。
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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.
爲輸出高的相關峰值，擴束準直光學系統輸出的高斯光束腰斑半逕應滿足一定要求。
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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.
結果表明，無論加載電阻與否，這三種類型的光折變明孤子具有類似的自偏轉特性，即孤子波沿一個拋物線軌跡運動。

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