真空

B. Nonmetallic chemical equipment: Graphite modified polypropylene tube-arrayed heat converter, falling-film absorber, polypropylene vacuum metering tank, sucking and screening bucket, polypropylene water spraying vacuum pump, and the popypropylene, polythylene glycol tank.

B。非金属化工设备：石墨改性聚丙烯列管式换热器、降膜改收器、聚丙烯真空计量槽、抽滤桶、聚丙烯水喷射真空泵；聚丙烯、聚氯乙烯储槽。

Heat loss coefficient is one of the most important parameters in the solar-thermal conversion of evacuated tubular collectors.

一、前言热损系数是真空集热管的一个重要性能参数，它直接影响集热装置的效率及最高集热温度。

Measurements can be performed in a vacuum or helium atmosphere.

测量可在真空或氦气氛中进行。

The analysis gets the result: the two methods both make out the heteromorphism InSb nanocrystals, which have different crystal lattices. There are few In and Sb elementary substance grains mixed in the samples and the ratio of two kinds of chemical elements nears to 1:1. The crystal structure of the particle which is gained in vacuum evaporation method is affected by the crystal structure of substrate surface and anneal, the size of grain is direct proportion to evaporation time.

分析得到结果表明：两种方法均制备出了多晶态的InSb纳米微粒，但晶格结构不同，样品中都混有少量的In和Sb单质颗粒，且两种元素的比均接近1：1；真空蒸镀法得到的微粒的晶态受基片表面晶格和退火的影响，颗粒的尺寸与蒸镀时间成正比；而惰性气体中蒸发法得到的微粒结晶过程与基片无关，颗粒的尺寸与惰性气体的种类和压强有关。

The effects of separation conditions on separation are also studied. It is found that the pressure of every step is very important for obtaining high-concentration CH〓 product.

研究中的变压吸附循环由已工业化的充压、吸附、并流减压、逆流减压和抽真空步骤组成，实验考察了多个操作参数对分离效果的影响，实验结果和理论计算表明：CH〓浓度主要受各步操作压力的影响。

The possibility of crack healing in high-speed steel was studied using the method of vacuum heating.

研究了高速钢裂纹在真空加热条件下实现愈合的可能性。

Based on freeze thaw cycle indirect tensile test, a further study of moisture susceptibility for some familiar graded HMA mixtures is carried out through modification of immersion conditions, and a new method of ...

本文以劈裂试验为基础，通过对浸水条件的改进，进一步深入地研究了几种常见沥青混合料的水稳定性，提出了以真空循环饱水条件下的沸煮劈裂试验的残留稳定度来评价沥青混合料的水稳定性。

The changes on photosynthetic pigment contents and antioxidase activity of space flown hollyhock plants were studied.

宇宙空间存在着高真空、微重力和不同能量的宇宙射线，对植物的生长、发育、繁殖、分化都会产生巨大的影响[1～ 4] 。

A new cermet sinter with through micro-porous structure was developed by vacuum liquid phase sintering method, in which Al2O3-Ni-Cr-Mo-Si-Fe powder was used as the basic material, TiH2 and CaCO3 were used as the composite pore-forming materials and hominess grains was used as dispersal particles. The cermet sinter was then infiltrated with Ag-Cu-Pb-Sn at vacuum and formed a new high temperature self-lubricating material.

以TiH2和CaCO3为复合造孔剂，以硬质微细颗粒为惰性弥散质点，采用真空烧结法制备出具有贯通型微孔结构的Al2O3-Ni-Cr-Mo-Si-Fe系金属陶瓷烧结体，并在烧结体中浸渍Ag-Cu-Pb-Sn系浸渍型固体润滑剂制备出新型高温扩散自润滑材料。

After three generations, several signal locus and homozygote lines for each expressing vector have been obtained.

以上三种重组质粒转入农杆菌GV3101中，并利用真空抽滤法导入拟南芥中，经50mg/L的潮霉素抗性筛选，得到T4代单拷贝插入纯合子植株。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。