bottom surface

基本解釋

So, that means you have to figure out what's the bottom surface of your solid, and what's the top surface of your solid?
這意味著你必須指出,立體圖形的底部的曲面，和立體圖形的頂部曲面？
If they hit the bottom surface before passing through, they are reflected off and absorbed at the top - and thus are not detected at the other end of the plates.
如果沒有穿過之前，中子就掉落到底板，那么它們會反彈到頂板，并被吸收——這樣就不會在發(fā)射另一端檢測到。
But this bottom surface here is four times 1/4 than this surface area here, the flat part.
僅僅是面積,側(cè)面積是底面積的。

On the bottom side, the notebook is sealed in such a way that you can't easily get at the battery, SSD or RAM. (This is pretty typical for Ultrabooks.) That bottom surface is also where you'll find the speaker strip, which is somewhat unusual: laptop speakers are usually located in the keyboard area or around the sides.
ENGADGET: Acer Aspire S7 review (13-inch): great Ultrabook, a shame about the battery life
Most models set up to try to figure out what happened during the Late Cretaceous climate changes conclude that water sank from the surface to the bottom of the ocean around Antarctica or the North Pacific.
FORBES: Could Fish Fossils Help Us Better Predict Climate Change?
Its wedge shape design aids venting, and its bottom feet provide stability on any surface.
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底面
By changing the base angles of the symmetric and asymmetric micro-prisms on bottom surface,the angle of emission light was simulated,respectively.
通過改變微棱鏡底面的底角,分別模擬了對稱微棱鏡和非對稱微棱鏡對導(dǎo)光板出射光視角分布的影響情況。
醫(yī)藥科學(xué)
底面