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1·If the protective seal is not air proof or poor gas purity, it will also bring welding quality problems.

气路有密封不好的问题，或气体纯度不高，也会引起焊接质量问题。

2·Experimental analysis was conducted to study launching equipment damage caused by open delay of air proof cover.

针对密封盖未及时开启造成发射装置的损坏问题进行了实验分析。

3·Proof of itinerary, including air tickets and hotel bookings.

提供路线，包括飞机票和酒店预订。

4·That fresh air, along with the bubble's ultraviolet-proof plastic, helps moderate temperatures and keeps the greenhouse effect in check.

而新鲜空气通过防紫外线塑料隔膜调节室内温度并抑制温室效应。

5·That fresh air, along with the bubble’s ultraviolet-proof plastic, helps moderate temperatures and keeps the greenhouse effect in check.

而新鲜空气通过防紫外线塑料隔膜调节室内温度并抑制温室效应。

6·With card-board, oil-cloth and canvas, she made the lattice-work air-proof and light-proof.

用一些纸板，油布和帆布她就让这些小个子防风又防晒了。

7·It is proved by the experiments that the quality of air-proof of the device is very important for realizing the non-oxidation healing.

实验表明：系统的密封质量对能否实现无氧化加热至关重要。

8·Our insulating glass, soundproof and heat resistant, is good at water & air tightness and can proof water and wind.

中空玻璃设计，隔音隔热，具有极佳的水密性和气密性，防风防水。

9·For the actuators with pneumatic diaphragms or air cylinders the matching flame-proof type electric-gas valve positioner shall be provided together with the valve.

执行机构采用气动薄膜或气缸执行机构的，随阀提供配套隔爆型电？气阀门定位器。

10·Use cases to proof that the cost accumulative curve technique and network optimize technique can be applied to manufacture phase of air-preheater to control the cost.

以案例证明了在预热器制造环节中是可以应用成本累计曲线法和项目网络优化技术来控制产品制造成本的。