查询词典 vacuum

If time limit is short, the above method is not good. Vacuum preloading can solve this problem, and it plays an increasingly important part role along the maturing and expansion of vacuum preloading concerting stack preloading technology.

真空预压法的诞生正好解决了该问题，而且随着真空预压联合堆载预压技术的日益成熟及推广使用，对解决上述问题起到越来越重要的作用。

The results show that the films are characterized by the amorphous microstructure and mainly composed of Si C bondings, C C bondings as well as a small mount of oxide impurity consorted with Si; the content of the C C bondings decreased after annealing in vacuum, meanwhile the Si C bondings content increased, annealing in vacuum is beneficial to the formation of SiC; after annealing at 800 in air, a thin dense layer of SiO2 formed on the surface, which prevented the oxygen from contacting with the film and effectively protected the inner SiC from oxidizing.

结果表明，薄膜主要以非晶为主，由Si--C键， C--C键和少量Si的氧化物杂质组成；在真空条件下经高温退火后，薄膜C--C键的含量减少，而Si--C键的含量增加，真空退火有利于SiC的形成；在800℃空气中退火后，薄膜表面生成一层致密的SiO2薄层，阻止了氧气与薄膜内部深层的接触，有效保护了内部的SiC。

Orthogonal experiment was adopted to analyze the effects of vacuum casting processing parameters such as mould temperature,resin temperature,vacuum deaerating time and curing temperature etc.

采用正交实验方法进行实验，研究了微齿轮真空铸型过程中模具温度、树脂温度、真空脱泡时间和固化温度对微齿轮外形尺寸的影响作用。

The research indicated that high precision micro-gear can be batch achieved by silicone mould vacuum casting and the vacuum deaerating time had the most important influence on the physical dimension of micro-gear.

研究结果表明，利用硅胶模进行微齿轮真空铸型可批量获得精度较高的成形件，真空脱泡时间对微齿轮成形件的外形尺寸影响最大。

Through adopt the measure such as controling status of hot metal (for example content of carbon, content of oxygen, amount of converter slag, weight of hot metal etc.), depressing degree of vacuum promptly by driving vacuum pump ahead or increasing flow of nitrogen, controling correctly inserted deepness of duck, controling the time of decarburizing, process parameters of decarbonization for managing IF steel using RH—MFB equipment are optimized.

通过严格控制来钢条件，如碳、氧含量，转炉下渣量，钢水量；迅速降低真空室内真空度，采用预真空的压降模式，提高提升气体流量；保证浸渍管插入深度及脱碳时间等措施，优化了攀钢RH—MFB处理超低碳IF钢的脱碳工艺参数，取得了较明显的工艺效果。

Result: The anticancer active component includes: taxol 9.45%、cephalomanine: 9.63%、10- deacetylbaccatinⅢ: 22.64%、total flavonoids: 19.15%. 3. The preparation of Seiadopitysin control Methods: Take dry Ginkgo leaves and extracted three times by sonication with 95% EtOH, solutions were concentrated under vacuum, after defatting by petroleum benzin, the sample was extracted with EtOAc and the solutions were concentrated under vacuum.

金松双黄酮对照品的制备方法：取干燥银杏叶以95％乙醇超声提取3次，提取液合并，减压浓缩，石油醚脱脂后，用乙酸乙酯萃取，萃取液减压浓缩，经硅胶柱(6cm×80cm)层析，石油醚-乙酸乙酯(9∶1～5∶5)梯度洗脱，产物用甲醇多次冲淋，再以二甲基甲酰氨溶解，反复重结晶，得黄色粉末结晶。

Resin was degassed using a vacuum and the winding carried out under vacuum .

树脂用真空脱气，并在真空下进行缠绕。

Provides the theoretical data for the vacuum degassing purification and vacuum dry of liquid medium.

为液体介质的真空脱气净化和真空干燥提供了理论数据。

VS-600 external –pump vacuum machine Uses Japan and Korea leading technology collection vacuum,Seal,Gasifies the many kinds of functions in a body, The sealer uses the barometric pressure type, Thorough change tradition packing sealer not firm phenomenon.

vs-600 外抽式真空包装机采用日韩领先技术集真空，封口，充气多种功能于一体，封口采用气压式，彻底改变传统包装封口不牢的现象。

Further, the prior coating methods for shielding electromagnetic wave of electronic equipments include three kinds of methods including 1 a vacuum metalizing wherein the metal is vaporized and deposited on the material surface under vacuum; 2 a conductive paint spray wherein the solution containing

此外，先前的对电子设备进行电磁波屏蔽的涂层方法有三种方法，包括1）真空金属镀层，这里，金属在真空下被蒸发并沉积在材料表面；2）导电涂料喷溅，这里，含金属粉末的溶液被喷雾到材料表面；3）化学镀，这里，待涂覆的

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷