Its function is to route a downlink by means of the most efficient air-ground subnetwork.
它的职能是路线下行的手段最有效的空地子网。
The origins of natural neutron flux on the air-ground interface are described in this paper.
本文论述了地-空界面上天然宇宙中子流的来源；
Tax shall be levied on general air service and air-ground service business in light of air transport.
通用航空业务、航空地面服务业务，比照航空运输征税。
A technical scheme of word data co-transmit in the air-ground tactical data link system is presented.
时隙分配技术是地空数据链中的一项关键技术，通过它可以提高系统的通信效率。
The conclusions in this paper are useful in integrated air-ground radar-netting and in sensor management.
文中的结论对空地一体化组网雷达的配置和管理具有一定参考价值。
The current air-ground communication manner is already not adapted to the fast development of the aviation industry.
引言目前，航空业界主要采用飞机通信和寻址报告系统来完成空地间的数据通信。
The statistic model of air-ground radio communication channel is characterized by the multipath fading, Doppler power spectrum and delay power spectrum.
空地通信信道的主要统计特性包括多径衰落特性、多普勒功率谱和时延功率谱。
Especially the contribution to crack initiation life of the ground-air-ground circle in the crack growth formula is underestimated under the transport spectra.
特别是运输机谱中的地—空—地循环，在裂纹扩展的公式中对裂纹形成寿命的贡献估计不足。
This paper deeply studies these problems. Several methods of the control of systems with nonsmooth nonlinearities are presented and applied to air-ground missile system.
本文就此类问题展开深入研究，提出几种能克服不光滑非线性影响的控制系统设计方法，并将所提出的控制方法应用到空地导弹控制系统中。
They could not provide adequate air cover for ground operations.
他们无法为地面作战行动提供足够的空中掩护。
There was a lowering sky overhead, sloppy ground under foot, and a winter chill in the air.
头顶上是低沉的天空，脚下是泥泞的地面，空气中弥漫着冬日的寒意。
Coordinating airline traffic on the ground is as complicated as managing the traffic in the air.
协调飞机在地面上的交通和掌控空中交通一样复杂。
The ground was hard, the air was still, my road was lonely.
地面很硬，空气静止，我的路途是孤独的。
It removes heat from the air outside or the ground below and uses it to supply heat to a building or its water supply.
它从外面的空气或下方的地面收集热量，并用此来供应建筑物或其供水所需的热量。
If it is displayed on such occasions, do not allow the flag to fall to the ground, but let it be carried high up in the air to form a feature of the ceremony.
如果在这种场合展示国旗，不要让国旗掉到地上，而是让它高高地悬在空中以构成仪式的特色。
The shock wave forms a cone of pressurized air molecules which move outward and rearward in all directions and extend to the ground.
冲击波形成了一个由压缩气体分子构成的圆锥体，它朝四面八方向外和向后移动，一直延伸到地面。
The fridge stays cool, thanks to air from under the ground.
冰箱利用地下空气来保持低温。
The drizzle and the wet air "water" the ground, which makes the crops and the plants grow.
细雨和潮湿的空气“滋润”了地面，使庄稼和植物生长。
Air is more polluted closer to the ground.
靠近地面的地方空气污染更严重。
They mix with ice in the air and fall to the ground as snow.
它们与空气中的冰混合，然后以雪的形式落在地上。
Her monitor has shown that air pollution levels are higher closer to ground level, which has helped highlight concerns that babies and young kids may be at higher risk of developing lung problems.
她的监测仪显示，越是接近地面，空气污染水平越高。这凸显了人们的担忧，担心婴儿和幼童患肺部疾病的风险可能会增加。
The English youngster noticed that pollution levels are around two-thirds higher close to the ground than they are in the air at the height where they are recorded by the agency.
这名英国年轻人注意到，接近地面的空气污染水平比该机构所记录的高空空气污染水平高出约三分之二。
One player puts the gilli on the ground inside a small circle and hits it into the air with the danda.
一个球员把地上的吉利球放在一个小圆圈内，然后用丹达把它打到空中。
This makes it easy to incorporate into an air or ground platform.
这使得该设备很容易纳入一个空中或地面平台。
Cubic's Multiband Miniature Transceiver (MMT) transfers voice, data and imagery between air and ground platforms and possesses the extra advantage of removable encryption.
Cubic公司的多频段微型收发器(MMT)可在空中和地面平台之间传输语音、数据和图像，并且额外具有可移动加密的优点。
Dickerson says the market for UAV Reconnaissance Systems, including air vehicles, ground control equipment, and payloads, is expected to be worth ＄13.6 billion through 2014.
迪克尔森所说的无人机监视系统包括无人机、地面控制设备以及载荷，从现在起，到2014年，该市场的总价价值将达到136亿美元。
A layer of cold air remains near the ground as smoke and fumes pour into it.
当烟尘和微粒拜谢到空气中以后，有一层冷空气仍然在贴近地面。
Then he flung outward, feet first, with a swish, Kicking his way down through the air to the ground.
然后，纵身一跳，他两脚先伸出去，在空中乱踢乱舞，于是飕的一声，降落到地面。
The system consists of two air vehicles and a ground control unit.
该系统包含两个飞行器和一个地面控制单元。
The system consists of two air vehicles and a ground control unit.
该系统包含两个飞行器和一个地面控制单元。
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