冷阱

本文主要讨论冷阱中丝网布置的优化问题。

In this paper , Optimal mesh arrangement in a sodium cold trap is discussed .

为了调节流量的方便，冷阱净化系统布置在电磁泵的出口。

In order to adjust the flow easily , the cold trap purifying system is arranged in the exit of the electromagnetic pump .

将固相微萃取（SPME）技术与冷阱富集系统相结合，对水体中痕量挥发性有机物进行了单体碳同位素分析，方法检测限较常规SPME提高了一个数量级。

A method combining solid phase microextraction ( SPME ) with cryofocus technique was developed for the compound-specific carbon isotope analysis of volatile organic compounds in aqueous phase .

考察了三种具有不同孔径和孔数目的喷头、氯气流量和脱水冷阱温度等对JSOG出口的O2（1Δ）浓度、O2（1Δ）分压、氯利用率及水蒸气含量的影响。

The O 2 ( 1 Δ) concentration , Cl 2 utilization rate and water content are measured using different injectors at different chlorine flow rate , cold trap temperature .

发现用聚氯乙烯管作冷阱时，最佳冷阱介质温度为-140～-150℃，对此提出了O2（1Δ）表面脱活与脱水互相竞争的解释。

We find that the optimum cold medium temperature is - 140 ℃ to - 150 ℃ when the trap is made of PVC . This result is explained by the competition between O 2 ( 1 Δ) quenching and H 2O freeze on wall of the trap .

将冷阱用于液样浓缩器（LSC）/色谱/质谱（GC/MS）装置中，可对饮用水中挥发性有机污染物进行快速定性、定量分析。

The cryotrap was applied in Liquid Sample Concentrator Gas Chromatography Mass Spectrometer Data System ( LSC / GC / MS / DS ) in order that qualitative and quatitative analysis of volatile organic pollutants in potable water can be performed .

真空冷冻干燥机冷阱中的气体换热分析

Gas Heat Transfer in the Cold Trap of the Freeze Dryer

饮用水中挥发性有机污染物的直接测定液氮冷阱/色谱/质谱&毛细管柱法

The direct measurement of volatile organic pollutants in potable water

它由回热器和冷阱组成。

It is composed of regenerator and the cold trap .

热脱附/冷阱聚焦/气相色谱/质谱法卷烟香气分析

Direct Thermal Desorption-Cooled Injection System-GC / MS Analysis of Flavor Compounds in Cigarette

φ160冷阱的设计和计算

Design and calculation of a φ 160 cold trap

回热器位于冷阱的上部。

The regenerator is above the cold trap .

氢计钠回路冷阱净化系统设计和调试

The Design and Commissioning of Cold Trap Purifying System of Hydrogen Meter Sodium Loop

钠冷阱丝网布置的最优化分析

Optimal Mesh Arrangement in a Sodium Cold Trap

这说明O2（~1△）经过冷阱后进入光腔的质量非常好，这个结果也为今后光腔设计提供了一个腔内散射损耗的数据。

This result also provides the data of scattering loss in cavity for resonator design .

以5%NaOH为吸收液，采用多孔玻板吸收管，冷阱采样。

Used po - rous glass plate tube containing 5 % NaOH as absorbent in ice-cold trap for sampling .

对样品处理、样品保存、浓缩吸附冷阱温度及气相色谱分析方法进行了讨论。

Sample treatment , sample storage , the cold trap temperature and the gas chromatography analysis method is discussed .

中点限流器上还接有第一限流管、中点压路和冷阱；

The first flow limiting tube , the midpoint press and a cold trap are connected to the midpoint flow restrictor .

实验中对蒸馏条件、冷阱形式、定量方法、器皿处理等各个环节做了大量实验研究。

Many experimental conditions such as distillation , combustion , cold trap , treatment of apparatus and quantitative method have been studied .

真空冷冻干燥初步研究的主要工艺参数为：冷阱温度为-34.8℃，真空度130Pa，加热温度为30~50℃。

The main processing parameter of freeze drying is that the temperature - 34.8 ℃, vacuity 130 Pa , heating temperature 30 ~ 50 ℃ .

从理论上分析了螺旋盘管式冻干机冷阱中气体的换热。

In this paper , the heat transfer of the gas in the spiral coil cold trap of the freeze dryer has been studied analytically .

冻干机冷阱盘管表面结霜特性的研究磁场对冷表面上结霜过程影响的实验研究

Research on Performance of Frost Formation Process on the Coil of Cold Wall in Vacuum Freeze-Drying Machine ; THE STUDY OF FROST FORMATION UNDER MAGNETIC FIELD

本文叙述了与钠净化技术有关的内容，包括钠中杂质浓度、净化理论、冷阱效率和冷阱再生等问题。

The content related to purification technique for sodium is discussed . It includes impurity concentration , purification theory , clod trap , efficiency , regeneration and so on .

对真空冷阱中处于滑流区的气体换热，应考虑温度跳跃和速度滑移对换热的影响。

The effects of the temperature jump and the velocity slip on the heat transfer for the slip-flow regime in the cold trap of the freeze dryer are considered .

为降低油污染，通常在中高真空泵与低真空泵之间串接入冷阱，但此方法已经不能满足真空环境洁净度的要求了。

In order to reduce the oil pollution , cold traps are usually adopted between high and low vacuum pumps , which can not meet severe needs any more nowadays .

对影响冻干机冷阱传热性能的两个因素（冷阱盘管壁面温度和结霜厚度）进行了实验研究。

An experimental study on the performance of freeze-dryer 's cold trap has been carried out under different temperature of the cold trap coil and different frost thickness in the paper .

真空系统加入了冲洗气体保护装置，有效地解决了以往冷阱变暖使油蒸汽反流的问题。

The rinsing gas protection set-up is introduced into the vacuum system , to effectively resolve the problem of the counterflow of the oil steam resulting from the warming of the cryotrapping .

探讨了274、275超高真空扩散泵油极限真空测试过程中，除气、循环冷却水温度、冷阱及环境温度等因素对测试结果的影响。

The effects of air exhaust , temperature of circulating cooling water , cold trap and environmental temperature on testing results of the degree of ultimate vacuum of 274 and 275 ultrahigh vacuum diffuse pump oil were discussed .

本文介绍冻结速率、初始冻结温度、加热方式和冷阱温度对冻干过程影响的单因素试验，试验分析了对冻干时间、冻干能耗的影响。

The paper introduced the influencing factors about the impact of the frozen speed , the early frozen temperature , the heating way and the cold trap temperature on the freeze-drying process , mainly on the freeze-drying time .

目前已经提出的方案主要利用了原子和光腔相互作用、冷阱束缚离子、电子或核自旋共振、量子点操纵、超导量子干涉等。

The schemes which are puted forward at ' present have mainly made use of the interaction of atoms and optical-cavity , cold trapped ion , electronics spin or nuclear magnetic resonance , quantum dots manipulation and superconducting quantum interference etc. .