China is now capable of building the world's first underwater vacuum tube train, a futuristic form of transportation that can achieve supersonic speed and reduce airborne noise, according to Chinese academics and scholars.

Airborne noise can be blocked by barriers ( walls, thick glass) or reduced by absorbers, such as foam insulators.

空降噪音可阻断障碍（墙，厚玻璃）或减少吸收剂，如泡沫绝缘体。

" We'll evaluate the airborne noise in there and the effects of all of the development changes that we made on the design as it exists," he explains.

“我们会评估空气和噪声的存在影响所有的发展变化，我们的设计，因为它存在，”他解释说。

ISO7779 ( 1999) Acoustics – Measurement of airborne noise emitted by information technology and telecommunications equipment.

资讯及通讯设备的噪音量测技术。

Portable pneumatic extinguishers Measurement of airborne noise at the operator's ear

便携式风力灭火机耳旁噪声的测定

General method for measurement of airborne noise emitted by construction machinery and equipment

GB/T13802-1992工程机械辐射噪声测量的通用方法

The noise indicators of ship include radiated noise, self noise, target strength and internal airborne noise.

舰船的噪声指标主要包括辐射噪声指标、自噪声指标、目标强度和舱室空气噪声指标。

Measurement method of airborne noise emitted by marine diesel engine

GB/T9911-1988船用柴油机辐射的空气噪声测量方法

Most ads are reproduced, airbrushed or changed by computer.

大多数广告都经过了电脑的处理、修饰和改变。

Europe may wonder why it has been airbrushed out of the picture.

欧洲可能会奇怪自己为什么被排除在外。

Somebody had been airbrushed out of the picture.

画面上有个人用气笔给抹掉了。

He wants schools to teach a more patriotic view of Japanese history, potentially sparking disputes with neighbours who say Japan already airbrushes out the seamier sides of its wartime history.

他希望学校的教育以一种更为爱国的观点看待日本历史，这可能引发与邻国的争端。这些邻国表示，日本已经对其战争历史进行了粉饰，抹去了其中的丑恶方面。

Airbrushes are for super models.

那种事只对超模有帮助

Candid photos no longer are found in a prized shoebox, but rather on a slew of social media websites and apps where they are put through a variety of filters and mock airbrushing for all the world to see.

快照不再出现在鞋盒里，而由社交平台或软件取而代之，在那里，人们能加很多的滤镜和模板，以让所有人都看到。

What prevents the internal investigators from airbrushing the facts or, say, omitting evidence that might implicate the chief executive?

究竟是什么令内部调查人员不会涂改事实，或者换句话说删掉那些可能会牵连到高层领导的证据？

I would never do that to myself, especially because I'm aware of the airbrushing and trainers and food programs.

我永远不会对自己做这个，尤其是我熟知喷绘、培训师和饮食计划。

Other tweaks included some added detail on the bottom layer, and airbrushing more white here and there.

其他的改变包括在底层增加了一些细节，用airbrush在某些地方增加了更多的白色。

The contact airburst fuze is a kind of fuze realizing accurate explosion height with wire length. It possesses the merit of high precision, strong antijamming ability and low cost.

触发空爆引信是一种以导线长度实现炸高精确控制的引信，它具有精度高、抗干扰能力强、成本低的优点。

By researching the efficiency of airhurst fire, the paper establishes the cubical elliptical damage rule, and using it to assess airburst fire efficiency.

文中通过对空炸射击三维射击效率评定的研究，建立了评定三维射击效率的椭球毁伤规律模型。

As a result of that discovery in last year's airburst over Chelyabinsk, Russia.

去年俄罗斯车里雅宾斯克上空的空中爆炸。

Error Analysis of Airburst Grenade of Shipborne Gun Firing Against the Sea Targets

舰炮使用空炸榴弹对海射击误差分析