空气动力学

In addition, aerodynamic roughness of stubble field increased with the increasing of stubble height, until the heights reached 15, 30, 15 cm for naked oats stubble, oilseed rape stubble and wheat stubble, respectively.

同类作物不同高度的留茬覆盖下，地表空气动力学粗糙度随留茬高度的增加而增大，在莜麦、油菜和小麦茬高度达到15、30和15 cm时显著增大，是3种留茬防风的有效高度。

The India airforce also have Mirage 2000, the technology is about 20 years old, the engine is of low thrust due to the limitation of the French engine technologies and aerodynamic is not as good as F16 nor the JF17 due to its tailless design.

印度空军也有幻影2000 ，该技术是20岁，发动机推力低原因的限制，法国发动机技术和空气动力学不如F16或JF17由于其tailless设计。

Creating a "car" that takes account of all these factors means exploring unchartered territory in aerodynamics and vehicle mechanics.

创建一个"车"，兼顾所有这些因素就是探索在空气动力学和车辆维修技工的境地。

Among the project features is the aerodynamic study of the body and underbody.

其中该项目的特点是空气动力学研究的机构和underbody 。

Particular attention was paid to the vehicle's aerodynamics, which resulted in a detailed study of the body and underbody surfaces in order to achieve the necessary downforce.

特别注重汽车的空气动力学性能，它产生了一个详细的研究机构和underbody表面，以达到所需的压力。

It provides additional downforce to boost the suction effect produced by the aerodynamic styling of the underbody and by the diffusers.

它提供了额外的压力，以加强吸引效果由车身底部的空气动力学造型生产和扩散器。

The smooth surfaces of the additional underbody panel enhance the Audi A5's inherently good aerodynamics.

在平滑的表面，提高了奥迪A5的天生好空气动力学额外的底部面板。

Porsche also claims the Panamera is the first in its class to have a fully covered underbody, which further improves aerodynamics and, in turn, fuel economy.

保时捷的Panamera还声称是第一个同类产品中有一个完全覆盖underbody ，从而进一步提高了空气动力学，并反过来，燃油经济性。

It's probably a variation of a few things.

我确信是空气动力学上的。

This is not surprising because the design of any flying vertebrate is subject to aerodynamic constraints.

这并不奇怪，因为任何飞行脊椎动物的设计都受到空气动力学限制。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。