查询词典 air-tight

In order to probe the air contamination caused by Acarid mites in Huainan ,dust mites floating in the air are suspended with the collecting device,smeared, and identified with the microscope respectively.

为探讨粉螨污染空气的情况，采用空气粉尘采样器和自制空气悬浮螨采样器，进行工作场所内悬浮螨的分离，并将获得的粉螨制片、鉴定。

Through the research on the fire burning in an atrium used as accoutrement mall, it is found that the impact of venting rate, make-up air inlets" positions and make-up air flux on a fire growth is comparatively great. At one time it is indicated that in the beginning phase a fire in an accoutrement mall is "linear and undulate" fire in terms of gravity ventilation. Whereas, it is "fire in terms of mechanical ventilation.

本文对用作服装商场的中庭建筑的火源燃烧特性进行了研究，发现排烟量、进风口位置及进风量大小等都对火源的发展有较大的影响；同时，实验分析还表明：自然排烟条件下，服装商场火源在起始阶段为"线性脉动"火源；而在机械排烟条件下，服装商场火源在起始阶段则为""火源。

This paper introduced a set of brandnew mobile air lifting technology for acidulation and cleanup by using the mature matching skill of downhole air pumping with the mobile injection equipment of surface nitrogen gas generation system.

应用成熟的气举采油井下配套技术，结合可以移动的地面制氮注入设备，形成了一套全新的移动式气举酸化排液技术，从而发展了塔里木油田的气举采油技术，并在塔里木哈得油田试验和推广应用中见到了较好的经济效益。

The second part of the 19th century witnessed several major discoveries in the field of cryogenics, including adiabatic expansion systems for cooling gases, that led to the liquefaction of oxygen, air, and nitrogen, vacuum flask, which facilitated storage and handling of liquefied gases and the Joule-Thomson effect to produce continuously operating air liquefiers, triggered a resurgence of cryosurgery

19世纪后叶，低温学领域有几项重要发现，包括将纯氧、空气和氮气液化绝热膨胀系统，能储存和处理液化气的真空瓶，以及应用Joule-Thomson 效应产生持续液化气体流，这些均促进了冷冻疗法的发展

In this paper,heat transfer boundary condition of fin and tube adjacent to air side was determined by means of liquid-solid coupled method for air-side heat transfer calculation.

使用流固耦合准确确定翅片及管内外侧的传热边界条件，并利用场协同理论进行分析。

The waist side air has some effects on controlling size of the recirculation zone and the sectional recirculation ratio, and it can decrease temperature of the recirculation zone, the ignition point is adjustable by means of changing the ratio of the waist air.

双通道燃烧器的腰部风射流、中二次风射流和下二次风射流在控制回流区强度和温度、加强风粉气流混合和增强下一次风射流刚性方面有不同的作用，实际应用中应根据燃料的着火性能、燃尽性能和结渣性能等特性合理选择使用上述措施。

When the moment made by material on turning plate is greater than that of heavy hammer and rocker, the disc will open adown to discharge. After discharge the moment made by heavy hammer and rocker will drive disc close quickly to realize locking air. Because the structure of valve is two-layer, there is always one disc in pipe that is in close condition. So it can discharges and lock air at the same time.

即当作用于翻板上的物料产生的力矩大于重锤摇杆产生的力矩时，阀板打开卸灰，一旦积灰卸去后，重锤与摇杆产生的力矩使阀板迅速关闭，实现锁气是由于本阀采用的是双层结构，因而使管道上阀板始终有一个是关闭状态，可使卸灰与锁气同时达到目的。

Ma Ying also pointed out that although oil prices have fallen over the highest point, but Air China will be difficult to enjoy the benefits of lower oil prices, mainly due to the original Air China by the international price of oil procurement Make up for the decline in hedging losses (of the decline in procurement costs higher than the loss of security units) in order to benefit from a decline in the price of crude oil, but because of the signing of contracts, including the other party has the right to determine in advance in accordance with the agreed price of the company to sell a certain number of cycles of Fuel, so the amount of losses may be higher than the drop in oil prices brought about by the decline in costs.

马英九还指出，虽然油价已经下跌了最高点，但航空公司中国将难以享受油价下跌带来的好处，主要是由于国际石油价格在原中国航空采购弥补在对冲损失（在采购成本比更高的安全部队损失下降）下降，以受益于原油价格下跌，但由于所签订的合同，其中包括对方已按照事先确定的权利，与公司商定的价格出售了一定数量的燃料循环，所以损失的金额可能低于石油价格下降所增加的成本下降带来的。

As AEI's Donnelly writes,"as the air defense and air combat capabilities of other nations, most notably China, increase, the demand for F22s would likewise rise."

为此， AEI的Donnelly写道："随着其他国家如中国等国空军预算和空战能力的提升，对F22的需求也同样应该上升"。

Too little air, on the other hand, creates a circumstance where there is not enough air to aerate the cellular structure.

过少气元素，相反创造了一个没有足够空气来为细胞结构充气的状况。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐