perpendicularly

基本解釋

I take my point on the surface and build a unit vector that is standing on it perpendicularly.
在曲面上固定一點,找出此點垂直的單位向量。
Light’s new trick is fancier than a boring push: It created the more complicated force called lift, evident when a flow in one direction moves an object perpendicularly.
但是光的新特性比單純的推力要高級：光能產(chǎn)生這種更復(fù)雜的作用力-提拉力，很顯著的例子是一個方向的光通量可以使物體垂直移動。
Such surfaces reflect most of the bats’ echolocation energy away from it, but some energy hits the surface perpendicularly, sending an echo back directly beneath the bat.
這樣的平面反射了大部分蝙蝠的聲波，但是有一部分能量垂直撞擊到表面上，聲波回傳至蝙蝠。

"We want to get the lead inside, so instead of chopping the pencil up perpendicularly and exposing just the ends, we strip the wood casing off the outside and expose the length of the lead, " says Litzen.
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