查询词典 atmosphere pressure

It was found that 78% zinc extraction was obtained at room temperature and atmosphere pressure.

试验结果表明：在常温常压下，用硫酸浸出该氧化锌矿石锌的浸出率可达到78%。

And the atmospheric density on Venus, atmospheric pressure is almost 100 times earth's atmosphere pressure.

而且金星上的大气密度很大，大气压力几乎是地球大气压力的100倍。

There is about two thirds time save compared with that of 180 minutes with that obtained at atmosphere pressure.

作者比较了常规加压与微波加压条件下，黄芩苷的萃取率和所需的萃取时间。

Atmosphere pressure almost has no effect on gas turbine efficiency and system net efficiency when atmosphere temperature is fixed.

在大气温度不变的条件下，大气压力对燃气轮机效率和系统净效率基本没有影响。

Linear solvation energy relation was firstly introduced in the paper, and the method and step of gaining the special parameters of solvent and solute were introduced in detail, and these special parameters were used to selection and optimization of extractive agent in extractive distillation. The model of predicting activity coefficient at infinite dilution was established by linear solvation energy relation. By the above theory, several candidate solvents were selected to separate C5 fraction, and by experiment of vapor-liquid phase equilibrium at atmosphere pressure, the mixture of N-methyl-pyrrolidone including 4% water was used extractive agent of separating C5 fraction. Then binary vapor-liquid phase equilibrium of the some compound in C5 fraction and N-methyl-pyrolidone were determined at atmosphere pressure and correlated by NRTL equation. Isoprene being objective compound, experiments were operated in the laboratory-scale column; the processes were simulated by RadFrac model in ASPEN PLUS. And by the combination of experiment and simulation, the new process of separation of C5 was established.

本文首先对线性溶剂化能关系进行了分析介绍，也介绍了采用溶剂化能关系得到溶质溶剂特性参数的方法步骤，并将这些参数用于萃取精馏萃取剂的选择与优化；也通过线性溶剂化能关系式建立无限稀释活度系数预测模型，取得了一定的预测精度；将通过上述方法初选的溶剂进行了常压汽液平衡的测定研究，通过实验研究选定含水4%的N-甲基吡咯烷酮溶液做为C5分离的萃取剂，测定了大量N-甲基吡咯烷酮与C5组分的二元平衡数据，并进行关联计算；以异戊二烯为目标产物在实验室规模的精馏塔内进行了C5分离的实验研究，取得大量塔内数据；通过选用合适的热力学模型，采用ASPEN中RadFrac模块对分离过程进行模拟研究，通过实验与模拟相结合，建立了C5分离的新工艺，为将来的工业化打下了坚实的基础。

This article researches affection of atmosphere pressure to hydro-kinetic force process by using fluid mechanics theory and works out amendatory method about pump allowable mounting height, wind pressure of centrifugal fan,rotor power and gas rotameter scale and algorithm of air-pressure pipe length of counter-current flow hight-order condenser in different atmosphere.

本文应用流体力学原理，研究了大气压对流体动力过程的影响，得出不同大气压时，泵的允许安装高度，离心式风机风压，轴功率，气体转子流量计刻度的校正方法和逆流高位冷凝器气压管长度的计算方法，对不同海拔高度地区，特别是高原和盆地地区具有十分重要的现实意义。

A simplified consolidation theory for unsaturated soils was proposed based on an assumption that pore air pressure equaled to the atmosphere pressure.

基于孔隙气压力等于大气压力的假定，建议了针对非饱和土的简化固结理论。

Vacuum consolidation test and load consolidation test were performed and compared for different kind of soil samples. After analyzing the results of tests, the four major mechanisms of vacuum consolidation were defined as: variation of capillary potential, drainage of sealed bubbles, vaporization and action of atmosphere pressure, in which, the action of atmosphere pressure is the most important factor.

首先对不同土样进行了一系列室内真空固结和加载固结的对比试验，通过对试验结果的比较分析，明确了抽真空引起土样固结的原因，即抽真空作用会在四个方面对试样产生影响：毛细管势的改变、封闭气泡的排出、汽化现象及大气压的作用，而其中大气压的作用是最主要的。

Based on the literature about desilication at atmosphere pressure and combined the formation of sodium alumino-silicate hydrate with practical condition of desilcation in ZhongZhou branch of CHALCO, the desilication at atmosphere pressure was studied systemly in laboratory.

一段脱硅需要把粗液加热到150℃以上，要耗费大量的热能；并且在加热过程中水合铝硅酸钠容易结晶析出附着在设备表面形成结垢，降低传热系数、影响设备运行周期。

Item (3) of Article 30, which provides:"In case the aerodrome elevation is comparatively high and if the pressure altimeter of an aircraft cannot be adjusted to the atmosphere pressure at the aerodrome elevation, the presumed zero altitude may be used", shall be revised as:"For an aerodrome that uses the atmosphere pressure at the aerodrome elevation, if the aerodrome elevation is comparatively high and where the pressure altimeter of an aircraft cannot be adjusted to the atmosphere pressure at the aerodrome elevation, the presumed zero altitude may be used".

将第三十条第项&如果机场标高较高，当航空器气压高度表的气压刻度不能调整到机场场面气压数值时，可以使用假定零点高度&修改为&使用机场场面气压的机场，如果机场标高较高，当航空器气压高度表的气压刻度不能调整到机场场面气压数值时，可以使用假定零点高度&。

It is also known as one of the most poisonous naturally occurring substances.

它也被称为一个最自然发生的有毒物质。

The greatest stress is found at the location on the cross section where V is the largest.

最大应力出现在横截面上V为最大的地方。