Good exercise choices for pregnant women include walking, low-impact aerobics, swimming or water aerobics.

Many people enjoy swimming or water aerobics.

也有很多人喜欢游泳和水中体操.

The key point of reducing noise paper machine is to reduce aerodynamic noise of vacuum couch.

降低真空伏辊空气动力性噪声是降低抄纸机噪声的关键.

Noise is included aerodynamic noise and structure noise.

噪声主要包括气动噪声和结构噪声.

Industrial-process control valves-Part 8-3 : noise considerations-Control valves aerodynamic noise prediction method.

工业过程控制阀.第8部分:噪声问题.第3节: 气动控制阀噪声预测法.

It is very important to reduce the aerodynamic drag and noise for a transport vehicle.

减小汽车行驶中的空气阻力,抑制行驶时的气动噪声具有十分重要的意义.

Using engineering estimating method, one stead aerodynamic heating of high speed missile was calculated.

采用工程估算方法, 计算了近程高速弹头的非定常气动加热.

Flying aerodynamic heating makes great effect on the reliability of nose fuze.

飞行气动热对弹头引信可靠性影响极大.

The analyses show that the break of the aerodynamic force causes the disturbance.

分析认为,空气动力在控制过渡过程中发生突变导致了这种扰动的产生.

The application of the theory of rotational characteristics will be useful in computation of aerodynamic force.

该方法的应用对轴对称体的气动力计算具有实际应用价值.

Aerodynamic force, moments , and longitudinal stability derivatives are estimated by three-dimensional low order panel method.

涉及的气动力 、 力距和纵向稳定导数等则由三维低阶板块法计算获得.

The aerodynamic force that is applied in a downwards direction as a car travels forwards.

赛车向前运动时,产生的向下的空气动力.

Aerodynamic force and moment acting on train traveling on cut are the least.

在路堑上所受到的气动力相对最小.

High-lift aerofoil section with forward swept wings to give excellent stall and slow speed handling characteristics.

高扬程 机翼部分与前掠翼,使优秀的档位和速度慢的特点.

These valves will be assembled not using silicone in the form of grease or aerosol spray.

这些阀门将在润滑脂或气溶胶喷射中不采用硅酮.

Do not operate where aerosol ( spray ) products are being used or where oxygen is being administered.

勿在正使用烟雾剂 ( 喷雾 ) 的地方或正供氧的地方使用缝纫机.

The current situation of applying dimethyl ether as a aerosol propellant was introduced.

介绍了二甲醚作为抛射剂在国内外的应用现状.

The aerosol generator forms an aerosol from a liquid formulation , which is partially vaporized.

气雾剂发生器由部分地汽化的液剂中形成气雾剂.

Aerosol generator of sodium fluorescence is important equipment for efficiency test of HEPA filters.

荧光素钠气溶胶发生装置是高效微粒空气过滤器效率试验的重要装置.

We are also a leading producer of high-tech components for the aerospace industry.

同时我们也是航天工业高技术零部件的主要生产商.

Titanium alloys are widely used in aerospace industry due to their excellent mechanical properties.

钛合金是航空航天工业中应用广泛的一种难加工材料.