查询词典 evaporation

This essay analyzes the method and procedure of ice-making recorded in Huai Nan Wan Bi Shu, and creatively proposes that the principle of "ice-making in summer" is refrigeration through the quick evaporation of water to absorb heat under low pressure, and that ice is made on the fine silk at the mouth of an urn, but not inside the urn at its bottom as it was conventionally thought. The essay points out three necessary conditions which should be fulfilled in order to realize "making ice in summer": low relative humidity (less than 26%), large volume of the urn (about 100 L) and proper air temperature (about 20℃).

分析《淮南万毕术》所载制冰方法和过程，提出低压下水快速蒸发吸热制冷是"夏造冰"的制冰原理；结冰的部位不是传统观点所认为的瓮底，而是在瓮口的嫌上；指出要实现"夏造冰"，需满足三个条件：相对湿度低（低于26%）、瓮的容积大（100升左右）、空气的温度适当（20℃左右）。

The valve is installed in the fixed roof tank ventilation to reduce the evaporation loss of oil control tank pressure.

该阀是安装在固定顶罐上的通风装置，减少油品蒸发损耗，控制储罐压力作用。

The effective heat-transfer temperature difference of every effect of multi-effect evaporation subsystem and the preheat temperature rise Δt_(p,j of every level of multi-level preheat subsystem of the design model were distributed by equal heating area, equal heat-transfer temperature difference, and free proration methods.

设计型模型对多效蒸发子系统各效有效传热温差Δt_i的分配和多级预热子系统各级预热温升Δt_的分配分别采用等面积法、等温差法、自由配比法等进行分配并采用矩阵法结合迭代法进行设计模拟计算，其中自由配比法巧妙地将具有复杂约束条件的决策变量Δt_i和Δt_转化为取值0～1的中间决策变量τ_i、τ_，为Δt_i和Δt_的自由搜索进而为优化设计提供了一个简便的方法；在常规设计模拟计算的基础上，建立了复杂多效蒸发系统优化设计模型，该模型以系统年总费用最小为优化目标，以生蒸汽温度T_0、冷凝器中二次蒸汽温度T_K、蒸发温差配比系数τ_i和预热温升配比系数τ_为决策变量，采用遗传算法结合矩阵法求解。

The CN1 is abio-medium layer, the thin film that made from the vacuum evaporation deposit sulfur prussic acid kalium film reacting with the partly electrode with silver bottom.

其中的CN1为无机介质层，由真空热蒸发沉积的硫氰酸钾薄膜与部分银底电极反应获得的薄膜。

In this paper, phase equilibria of quinary reciprocal system K~+, Na~+//CO_~(2-), SO_4~(2-), B_4O_7~(2-)-H_2O and its subsystems (two ternary systems and three quaternary systems) at 273 K were studied by isothermal evaporation method .

采用等温蒸发法研究了五元体系K~+，Na~+／／CO_3~(2-)，SO_4~(2-)，B_4O+7~(2-)-H_2O及其中两个三元子体系、三个四元子体系273 K相平衡关系。

In this paper, phase equilibria of quinary reciprocal system Li+, Na% KV/ C032. B4O72~-H2O and its subsystems (nine ternary systems and five quaternary systems) at 288K were studied by isothermal method; An experimental study on metastable equilibria at 288K in the quinary system was done by isothermal evaporation method, also.

采用等温溶解平衡法研究了五元体系Li~+，Na~+，K~+∥CO_3~(2-)，B_4O_7~(2-)—H_2O及其九个三元子体系、五个四元子体系288K相平衡关系；采用等温蒸发的方法研究了该五元体系288K介稳相平衡关系。

Infrared upconversion and optical storage thin film CaS∶Eu, Sm has been successfully developed by electron beam evaporation and radio frequency magnetron sputtering. Infrared upconversion efficiency of CaS∶Eu, Sm thin films with different thickness has been investigated by using the ultrashort infrared laser pulses with different FWHM.

采用电子束蒸发和磁控溅射技术制备了具有红外上转换和光存储特性的电子俘获材料CaS∶Eu，Sm薄膜，利用不同脉宽的超短红外激光测试了它们的红外上转换效率，指出CaS∶Eu，Sm薄膜的红外上转换发光效率不仅与制备工艺及热退火工艺密切相关，而且存在"耗尽"现象。

The far infrared evaporation technology for treatment of lower-middle level radioactive waste liquid was investigated.

本文研究了用远红外蒸发技术处理中放废液的工艺条件及影响因素。

The chewing gum is dissolved using a water-immiscible solvent requiring either evaporation and redissolution of the sample or solvent change during the SPE step.

口香糖溶解于与水不相溶的溶剂中，在固相萃取中既可以蒸发和重解样品又可以更换溶剂。

With the Carrousel Oxidation Ditch Process, which is commonly adopted domestically and internationally, the effluent would reach first-grade State discharge standard and be disposed into the sea while the mud would be sent to the Refuse Landfill Site after concentration and evaporation.

处理工艺上，采用目前国内外常见的卡罗塞尔氧化沟处理工艺，污水经二级处理后，水质达到国家一级排放标准，排入海中，污泥经浓缩脱水后送垃圾填埋场处置。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。