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The leak detectors developed by the air pressure difference is based on the principles of law and development.

本所研制的检漏仪是基于空气差压法的原理而开发的。

It is a great feeling that our Air Water 'Water Station,' the first of its kind in the world, is making such a positive difference for the local populace.

这是一种伟大的感觉，首次在世界上取得成功运用的项目，是这样的积极改变着当地居民的生活。

If the installation of vaccum system is not rational,it will make noncondensable air gathering and terminal difference increasing.

通过对托电一、二期4×600 MW机组的真空分析，找出了影响双背压机组低压凝汽器真空的主要因素为，抽真空系统设置不合理使不凝结气体聚集，导致端差增大，并通过试验验证了理论分析的正确性，进而提出了解决方法。

If the observer is at a great distance compared to the other dimensions of the experiment and the rays are nearly perpendicular to the reflecting surfaces, then the path difference between the two waves (corresponding to r1-r2 in the preceding section) is just twice the thickness d of the air wedge at each point.

如果观察者比起实验装置来讲距离较远而且光线较接近于垂直反射于表面，那么这两光波的光程差(在前面所述的相应部分 r1-r2)就仅仅是空气劈尖在该点处的厚度 d 的两倍。

The observer is at a great distance compared to the other dimensions of the experiment and the rays are nearly perpendicular to the reflecting surfaces, then the path difference between the two waves (corresponding to r1-r2 in the preceding section) is just twice the thickness d of the air wedge at each point.

如果观察者比起实验装置来讲距离较远而且光线较接近于垂直反射于表面，那么这两光波的光程差(在前面所述的相应部分 r1-r2)就仅仅是空气劈尖在该点处的厚度 d 的两倍。

Results The difference between flying cadets and aircraftman in N score was statistically significant, but not in P,E,L score. The cadets from city in E scores were higher than those from countryside, but lower in L scores. Education level and occupation of cadet's parents affected E and L scores of cadets.

结果 飞行学员的N分明显低于普通新兵，差异有显著性，而P、E、L分差异无显著性；来自城市的飞行学员较来自农村的飞行学员E分高，L分低；父母受教育程度及从事职业对飞行学员E、L有一定影响。

M ake a difference in your life.

使你的生活不断改进

Although the difference between both is not big, but enough rings noisy alarm bell to EBay.

尽管二者之间的差距并不大，但足以给eBay敲响警钟。

Results:Alb and TFN had a significant difference in study group with case control group or normal group.

结果：Alb、TFN在研究组与其他两组之间存在显著性差异，CHI在三组之间均存在显著性差异。

Because of large difference between evergreen and deciduous trees, winter albedo changed more significant than that in summer.

夏季植被的增温效应区域差异不明显，可能与森林植被变化的夏季效应较小有关。

The United Kingdom has pledged to provide technical assistance to the peacekeeping effort in Darfur, including airlifting supplies and equipment to assist the African peacekeepers.

英国承诺为达佛的維和努力提供技术帮助，包括提供非洲的維和部队空运补給和裝备。

Results: The level of ET-1mRNA in placental villus was significantly higher in pre-eclamptic women than that in control group.

结果：妊高征组患者胎盘绒毛组织ET-1 mRNA的表达较正常妊娠组明显增高。