main beam

基本解釋

The results indicated that the width of main beam of vector-hydrophone was narrower than that of pressure hydrophone array at the same aperture.
結(jié)果表明，相對于聲壓陣，在不增加陣孔徑的前提下，利用矢量水聽器陣獲得的波束主瓣更窄，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.
此時目光以有益的紫外線A束為主，可使人體內(nèi)產(chǎn)生維生素D，從而提高人體免疫力，防治骨質(zhì)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說，我們在太平洋的部分島嶼上看到雖然浪高大約到了一米，但是某些島嶼并沒有正面碰上這些海浪。

The main challenge to building a tractor beam is pretty intuitive.
FORBES: Scientists Build A Working Tractor Beam
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.
ECONOMIST: Energy weapons: Zap, crackle and pop The