文章介绍了双重密封的结构和原理，通过充水试验检验双重密封的各项性能，对出现的问题进行了分析，并提出了改进方法。
This paper illustrates the structure and principle of double seals, analyzes the problems found in water filled test, and brings forward the improvement method.
常用的试验方法为静水试压，即：向封闭的管段充水，然后把管段升压至规定压力，检查是否泄漏。
A common approach is hydrostatic testing-filling a closed pipeline section with water, then pressurizing the line to a specified pressure to check for leaks.
通过正交试验，探讨了A SBR工艺最为重要的两个操作参数即充水时间和负荷率对ASBR工艺过程的影响。
Two essential operational parameters of (ASBR) - fill time and organic loading rate were discussed for their effects on the process performance through orthogonal tests.
采用临时管线给试验管道充水和排水，用泵给管道增压。
Temporary connections for filling and draining the pipeline are used, and a pump is used to "pressure up" the line.
结合很多工程项目的实践经验，对大型油罐软弱地基充水预压加固试验的沉降监测作专题简述；
The paper expound the topic in settlement survey for controlled water and consolidate tests to preload large oil tanks on soft ground as background of experience with many engineering projects.
对NX-383 缓蚀阻垢剂在以中水为补充水的焦化冷却水系统中的缓蚀和阻垢性能进行了评价，并进行了现场应用试验。
The performances of NX-383, corrosion and scale inhibitor, being used in regenerated water as make-up water in cooling water system of coking plants are evaluated.
在试验过程中，主要考虑了4类模型：(1)后缘裂隙充水模型；(2)前缘洪水涨退模型；(3)坡面降水模型；(4)各种补给并存模型。
During the test, the four models were taken into account, (1) water filled in back fissures, (2) front flood fluctuation, (3) rain-fall on slope surface, and (4) combination of above three models.
在试验过程中，主要考虑了4类模型：(1)后缘裂隙充水模型；(2)前缘洪水涨退模型；(3)坡面降水模型；(4)各种补给并存模型。
During the test, the four models were taken into account, (1) water filled in back fissures, (2) front flood fluctuation, (3) rain-fall on slope surface, and (4) combination of above three models.
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