main beam

基本解释

The results indicated that the width of main beam of vector-hydrophone was narrower than that of pressure hydrophone array at the same aperture.
结果表明，相对于声压阵，在不增加阵孔径的前提下，利用矢量水听器阵获得的波束主瓣更窄，旁瓣更低。
Useful to look at the ultraviolet A main beam, the body can produce vitamin D, so as to enhance human immunity, prevention and treatment of osteoporosis.
此时目光以有益的紫外线A束为主，可使人体内产生维生素D，从而提高人体免疫力，防治骨质疏松。
"From what we're seeing in some of the Pacific islands most of the wave heights are up to around a metre, but some of those islands aren't in the main beam of the tsunami wave," Koyanagi said.
Koyanagi说，我们在太平洋的部分岛屿上看到虽然浪高大约到了一米，但是某些岛屿并没有正面碰上这些海浪。

The main challenge to building a tractor beam is pretty intuitive.
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The main appeal of using an energy beam to shoot things is that it travels at the speed of light, which means, in practice, that it will hit whatever it is aimed at.
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