由于立方体卫星体积小、重量轻，将它们送入地球轨道的成本比传统通信或GPS卫星要低得多。
Because they're so small and light, it costs much less to get a CubeSat into Earth's orbit than a traditional communications or GPS satellite.
形成黑洞的关键环节，就是要像脉冲星崩溃时出现的情况一样，把足够大的质量或能量压缩到足够小的体积。
The key to forming a black hole is cramming enough mass or energy into a small enough volume as happens when a massive star collapses.
此外，无人机的发动机比要驱动沉重的有人驾驶飞机的发动机体积小，因而发热更低。
Moreover, drone engines are smaller-and therefore cooler-than those powering heavier, manned aircraft.
它的体积明显要比通常安全气囊要小得多，因此它只需要小一罐气体——就像一小罐二氧化碳气瓶——并且不会产生热量。
Since they're much smaller, in terms of volume, than a regular airbag and use just a small canister for gas--similar to a CO2 cartridge--the belts don't get hot like airbags do.
它的体积明显要比通常安全气囊要小得多，因此它只需要小一罐气体——就像一小罐二氧化碳气瓶——并且不会产生热量。
Since they're much smaller, in terms of volume, than a regular airbag and use just a small canister for gas-similar to a CO2 cartridge-the belts don't get hot like airbags do.
有一个优点在于，它的体积会比8000号TNT要小很多。
One advantage is that it'd be physically much smaller than 8, 000 tons of TNT.
动物体积越大，它们的体重每克消耗的能量比体积小的要少得多，即使在休息的时候也是如此。
Larger animals tend to use less energy per gram of body mass than smaller ones do, even at rest.
一个体积如此之小、功率如此之大的发动机，要保持不升温是不可能的。
There is no way an engine that small and that powerful could keep itself cool.
摘 要本项目设计的是以具有高效、节能、数字化、体积小等特点的D类音频缩小器为中心的便携式数字扩音器。
The project is designed with high efficiency, energy saving, digital, small volume features of the D for audio amplifier core portable digital megaphone.
摘 要本项目设计的是以具有高效、节能、数字化、体积小等特点的D类音频缩小器为中心的便携式数字扩音器。
The project is designed with high efficiency, energy saving, digital, small volume features of the D for audio amplifier core portable digital megaphone.
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