Can you conceive of a complete vacuum?
你能想象出完全真空的情形吗？
In contrast to the mechanism of conduction and convection, radiation may take place in a perfect vacuum .
与传导和对流的原理不同，辐射可在完全真空中进行。
create a perfect vacuum
形成完全的真空状态.
Vacuum packer can complete the whole process of pumping air into vacuum state, sealing, lettering, cooling and exhaust in terms of the process, but just need to press the vacuum cover.
产品说明：真空包装机只需按下真空盖即自动按程序完成抽真空、口、字、却、气的全过程。
completely blank line
完全空白行-ＦＯＲＴＲＡＮ用
Pull out the air pump handle and pump it repeatedly until the vacuum indicator button goes completely down.
每次拉动手柄，真空显示钮(深蓝色)自动降低，直至完全平降即可。
Strong S completely regular and strong S completely normal spaces;
强S-完全正则与强S-完全正规空间
He roundly asserted that it is true.
他完全断言这是真的。
form genus of imperfect fungi.
不完全真菌的形态属。
totally disconnected metric space
完全不连通度量空间
This energy is called the vacuum energy, because it is the energy of the spacetime when the large four dimensions are completely devoid of matter or fields.
这种能量称为真空能量，因为这是当四个大维度完全缺乏物质或场的状况时，所具有的时空能量。
vacuum jar complete with cases
真空瓶,外壳装配齐全
seibt rectifier
低压真空管全波整流器
all-automatic vacuum thermoforming machine
全自动真空热成型机
The German air forces would be virtually swept from the skies.
德空军将被完全驱出领空之外。
A: It's most likely cause by valve( enjactor).
在规定的时间内真空没有完全消失并达到大气压状态，会是那些原因造成？
Despite being made almost completely of air, the sudsy foam in that sink somehow behaves like a springy solid. Strange.
尽管那池中的肥皂泡几乎完全由空气组成,但它们又颇象有弹性的固体.这可真得可怪.
A vacuum is the only perfectly transparent medium; all others absorb some frequencies of electromagnetic radiation.
真空是唯一完全透明的媒质,一切实物媒质都会吸收电磁波谱的一些波段。