查询词典 atmospheric pressure

It is the measure of negative pressure between standardized atmospheric pressure and a theoretically perfect vacuum.

真空是以标准大气压的负压和理论完全真空来测量的。

Air may be provided adjacent each protrusion to provide natural ventilation if the pressure of the water flow drops below atmospheric pressure.

空气可提供邻近每个椎间盘突出提供自然通风，如果压力的水流量低于大气压力。

Kitazato indicated that he was surprised by the abundance of foraminifera in the deep water because the pressure there is 1100 times greater than normal atmospheric pressure at the surface.

Hiroshi Kitazato表示，他对那儿有如此多的有孔虫感到吃惊。由于水的深度，那儿的压力大约是一般大气压的1100倍。

The invention use an alcaligenes faecalis as a fermentation strain, using sucrose or glucose commonly used in food industry as carbon source for microbe cultivation, using conventional chemical fertilizer in the agricultural production as nitrogen source and inorganic salt, the medium of microbial growth is prepared by auxiliary yeast powder, aerobic fermentation is processed in the conditions of 30 DEG C, 1.0vvm, 500r/min ventilatiing and stirring, adding specially supplementary food fluid in the fermentation course achieves the following aims:(1) controlling the penetrating pressure of the broth in the hypotonicity condition;(2) controlling the pH of the broth between 4.0 and 7.0;(3) providing abundant nutritious matter such as carbon source and nitrogen source for microbial growth, obtaining Weilan gum broth after 72 hours, obtainin Weilan gum product by drying in 95-115 DEG C and atmospheric pressure.

本发明以一株粪产碱杆菌为发酵菌种，使用食品工业中常用的蔗糖或葡萄糖作为微生物培养的碳源，以农业生产中常用的化肥作为氮源和无机盐，辅以酵母粉配制微生物生长的培养基，在30℃以1.0vvm、500r/min通风搅拌条件下好氧发酵，发酵过程中流加特殊配制的补料液以达到以下目的：(1)控制发酵液的渗透压处于低渗条件；(2)控制发酵液的pH处于4.0～7.0之间；(3)为微生物生长提供丰富的碳源和氮源等营养物质，经72小时得到威兰胶发酵液，在95℃～115℃下常压干燥得到威兰胶产品。

Methods An high efficiency microwave radar transmitter was refit to act as the microwave resource,an microwave power densimeter was independently developed to detect microWave intensity;the hypergravity enviorment was simulated by using the centrifuge;the low atmospheric pressure environment was founded by refitting the animal low pressure oxygen cabin.

高功率微波武器在未来战争中，特别是在空战和海战中，对装备的破坏和人员的杀伤将发挥"杀手锏"的作用［56］。微波辐射的热效应和非热效应对机体的影响是复杂而广泛的，如同水源污染，大气污染和噪音污染一样，亟待进行深入研究和有效治理。目前国内外虽有不少关于超重环境和低气压环境以及微波辐射对机体影响的单因素研究报道［79］，但尚未见有微波辐射对处于超重或低气压环境下机体协同影响的报道。

The characteristic is low atmospheric pressure and partial pressure of oxygen.

其特点为气压和氧分压均低，易导致人体缺氧。

This paper propounds an improved kinetic model of monthly potential evapotranspiration ETi:ETi=where i is a number of month, Pi the monthly mean atmospheric pressure,ti the monthly mean air temperature, di the number of days in a month,Ui the monthly mean wind velocity measured at height 10-12m, woi the saturated water vapour pressure at ti,and hi the monthly mean relative humidity.

本文提出了关于月可能蒸散量ETi动力学模型的改进形式：式中，i是月份的编号，Pi是月平均气压，ti是月平均气温，di是月的天数，Ui是在10─12m高度处观测的月平均风速，woi是在温度为ti时的饱和水汽压，而hi是月平均相对湿度。

Standard atmospheric pressure to high pressure pipeline vacuum 10.33 meters.

标准大气压能压管路真空高度10.33米。

A channel optical fiber sensor was utilized to increase sensitivity and to measure little change in air pressure.The relation between optical fiber sensor output changes and atmospheric pressure changes was calibrated with a standard air pressure gauge.

为了提高检测灵敏度、降低检测限，使用了双通道光纤传感器，构造了一个气压测量装置，并以标准空气压力计对这种光纤气压传感器的输出变化随气压变化的关系进行了标定。

Based on the above two experimental studies,we inferred the main combustion characteristic at high altitude which was that the flame radiation coefficient was obviously lower than that in atmospheric region and the mechanism which was due to higher volume fraction of carbon particles than that under atmospheric pressure.To validate this infer,the focus of last experimental study was on the volume fraction of carbon particles in the flame.

前两部分实验研究我们分析得到高原地区的主要燃烧特性是火焰辐射系数明显低于常压地区，其机理是由于火焰中的碳颗粒体积分数高于常压下的，为了验证这一推断，最后一部分实验研究的重点是火焰中碳颗粒的体积分数。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。