查询词典 drag

Based upon the new explanation of the structure of turbulent boundary layer and the fact that specially designed non-smooth surface can reduce fluid drag,the authors have designed and fabricated the Riblets Drag Reduction Film.

作者根据湍流附面层结构新的解释及非光滑特殊造型表面可以减小流体阻力的事实，作者研制了微肋条减阻薄膜，贴在赛船上参加比赛，获得好成绩[1、2 ] 。

The objectives are the subsonic and supersonic zero-lift drag coefficients, the maximum lift-drag ratio, the maximum lift coefficient at low speed, the average and maximum value of forward and sideway RCS.

目标函数取为亚音速及超音速时的零升阻力系数、最大升阻比，低速时的最大升力系数，以及飞机前向、侧向的RCS平均值、最大值。

In theory, oblique elliptic wing with an elliptic load has the minimum wave drag due to lift and induced drag.

理论分析表明，具有椭圆载荷分布的斜置椭圆机翼有最小的升致波阻和诱导阻力。

In the breath to hear the first reaction is to stay away from that in a little closer to the left of the headset voice had a heavy drag the mouse to the left until the right Re-sound, and then drag the mouse to the right, until the voices on the left side is heavy, Huang mouse back and forth about this, identify the voice of compromise, which is the direction of a ghost.

在听到呼吸的第一反应是要远离，在一点点靠近，左边的耳机声音重了就把鼠标往左拖，直到右边的声音重，再把鼠标往右拖，直到左边的声音重，就这样左右来回晃鼠标，找出声音的平衡点，就是鬼的方向。

Shandong Weifang drag Holdings Limited is the birthplace of small-wheeled tractor, but also the country's largest production base for small-wheeled tractor, a large state enterprises, mainly agricultural production wheeled tractor, With an annual output capacity of 200,000 units registered trademark "Wei drag" card.

山东潍坊拖拉机厂集团有限公司（简称山东潍拖集团有限公司）是中国小四轮拖拉机的发源地，也是全国最大的小四轮拖拉机生产基地，国家大型一类企业，主要生产农用轮式拖拉机，年产能力20万台，注册商标&潍拖&牌。

Swan has always been a beautiful symbol of love, loyalty, Swan strictly monogamous life, if one died, the other does not eat do not sleep, I love Italy, this great love of people moved to become a swan couple of the most beautiful set love token, this 18K rose gold diamond pendant as if a swan laid-back swim in the lake on the drag, the design of the romantic style of the graceful lines of infiltration in each, mounted in the most eye-catching dazzling Diamond center, meaning loyalty, there are 11 small drill beautiful mosaic wings, decorated to perfection, as a bright spot to the eye, You drag in the chest, the fashion show with beautiful women.

天鹅一直都是忠贞爱情的美好象征，天鹅一生严守一夫一妻制，若一方死亡，另一方则不食不眠，一意殉情，这种伟大的爱情让人们感动，一次天鹅成为情侣的最美好的定情信物，这款18K玫瑰金钻石吊坠仿佛一只天鹅悠然自得的游曳在湖面上，设计造型的优雅浪漫渗透于线条的每一处，镶嵌在最中心的美钻耀眼夺目，寓意忠贞，有11颗小钻镶嵌的翅膀美丽动人，点缀得恰到好处，成为吸引视线的亮点，游曳在胸前，尽显女性的时尚与美丽。

By using the semi experiential engineering arithmetic based on the ideology of area ratio , the slope of lift coefficient curve, the zero lift drag coefficient and the induced drag factor of double delta wing aircraft were calculated.

采用基于面积比思想的半经验工程算法计算了双三角翼飞机的升力系数曲线斜率、零升阻力系数和诱导阻力因子。

We call this form of drag induced drag because it is "induced" by the process of creating lift.

我们叫这种阻力叫诱导阻力是因为它是在产生升力的过程中产生的。

This paper presents a mathematical model that employs momentum method to calculate the aerodynamic drag of the truck. This model achieves higher precision than previous methods without consideration of induced drag.

本文提出了动量法计算汽车气动阻力的数学模型，该模型克服了此前的方法中忽略诱导阻力的缺点，显著的提高了计算精度。

But for a small vehicle, the decrease in induced drag and increase in skin friction drag are more equal, so only marginal improvements in overall efficiency are possible.

但是对于小型飞行器，减少的诱导阻力和增加的表面摩擦阻力大致相等，所以效率的提升并不显著。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。