The rockets are free-flight, spin-and-fin stabilized rockets, and do not have guidance systems.
火箭是无控-飞行、旋转-和-翼稳定火箭，而且没有制导系统。
By the study of extended range guided munitions (ERGM) trajectory characteristics, ERGM free-flight and glide trajectory characteristics are revealed and illustrated.
研究并揭示超远程炮弹无控段及滑翔段的弹道特性。
The result is satisfactory by using a method of the artificial earth satellite orbit determination from range rate observations to fit the free-flight trajectory of rocket.
用人造地球卫星轨道计算的测速定轨方法，去拟合火箭飞行弹道的自由段，取得了比较满意的结果。
"The most fruitful locations were at the aviaries, where I was able to setup my studio in a large free-flight room and coax the birds to fly across the white set," says Zuckerman.
“最有收获的地方就是鸟类饲养场，我可以在一个放养鸟类的大棚里搭建起自己的工作室，然后引诱它们飞过我的白色布景。”祖克曼这样说。
However, through free-fall testing, the researchers could quantitatively measure the samara's flight dynamics and use this information to control the samara's autorotation and flight path.
然而，通过自由落体测试，研究者可以量化的测量翅果的飞行动力并且用得到的信息数据来控制翅果的自旋和飞行轨迹。
Billions of dollars in free money goes unclaimed because consumers simply don't know, or don't believe, that when they book their flight and hotel together, they may save.
本来可以节省的数以十亿美元被浪费了，因为消费者不知道也不相信当他们同时预订机票和酒店时，他们的确是可以节省费用的。
Some airlines also keep their own stocks of duty-free goods to sell to passengers in flight.
一些航空公司同样备有自己的免税产品，来在飞行途中向乘客出售。
It was as though Orville and Wilbur Wright had not just discovered powered flight but had built a plane with tray tables and a duty-free service.
那时赖特兄弟好像还没有发明动力引擎飞机，但用折叠餐桌和免税服务引擎的购物中心已经起飞。
If you have an airline miles rewards card, as I do (Southwest Visa), you can earn yourself a free round trip flight for about $20,000 in purchases.
如果你有一张航空积分里程信用卡，正如我说的（西南签证），你可以为你自己赢得一个价值20000美元的免费往返旅行班机。
If you have an airline miles rewards card, as I do (Southwest Visa), you can earn yourself a free round trip flight for about $20, 000 in purchases.
如果你有一张航空积分里程信用卡，正如我说的（西南签证），你可以为你自己赢得一个价值20000美元的免费往返旅行班机。
reduced flight schedules, making free seats harder to find;
省略了航行时间表，这使得用户很难订到免费的座位；
By using the line of sight (LOS) measurements from space based infrared sensors, free flight phase trajectory estimation problem of ballistic missile is studied.
主要研究空间预警系统利用星载红外传感器的视线测量估计弹道导弹自由飞行段弹道的问题。
Free time at leisure after breakfast. Tour guide will take you to the airport for flight home or next destination.
早餐后自由活动，到指定集合时间由专车送往机场搭乘中华航空回美国或到下一个目的地。
This paper mainly studies how to accurately fit the air dynamics parameter by the ballistic data of projectiles' free flight.
论文主要研究从弹丸自由飞行数据中如何准确地拟合空气动力系数。
Let's say a plane arrived late in Houston and the "Continental" flight attendants onboard had finished their shift and a "United" reserve crew was free.
让我们设想一下这个古怪情景：一架飞机晚点到达休斯顿，机上的“大陆航空”空乘人员已经完成了他们的工作班次。
The trajectory model consists of the uncontrolled free flight segment, the inertial guided glided segment and the final guidance segment, which accords with the proportional guided law.
弹道模型由炮弹无控自由飞段、惯性制导滑翔段和末制导段按比例导引制导率建立。
One of the most available ways to solve the problem is "free flight" that the pilots may choose the air route and flight speed suitable for them.
解决这一问题的最有效方法之一就是“自由飞行”，即允许飞行员选择最合适自己的飞行航线和飞行速度。
Our flight doesn't leave for another hour. Why don't we take a look around these duty-free shops?
我们的班机还要一小时才起飞。咱们何不到免税商店逛逛呢？
A newborn baby has been awarded with free tickets for life on Buraq Air after his mother gave birth aboard a flight.
一位母亲在乘坐布拉克航空公司的航班上，产下了一位男婴，而这位新生儿也将获得由该航空公司提供的终生免费乘机的礼物。
Free flight scale models tend to be a handy size - easy to store at home, and capable of flying on small fields without disturbing the neighbours.
自由飞模型一般都很袖珍，容易储存，也容易在小场地飞行而不会打扰邻居。
Through a large number of computer digital simulation experiments, this paper discusses the shift time of free flight and little single impulse individually.
本文通过大量的计算机数字仿真实验，研究了无冲量自由飞行轨迹与单个小冲量飞行轨迹的转移时间。
Analyses show that a measurement of 5 points altitude in the free flight path, the impact position error may be estimated probably.
分析表明，在自由飞行段5点测高可以估出落点偏差。
To birds native to the country it will seem harmful, for through their dread of its shadow they will lose their power of free flight.
对于本国的鸟，它会视之为有害，因为通过它们对它的影子的恐惧，它们会失去了自由飞行的力量。
It also analyses how to use genetic algorithms to free flight conflict detection and solving. The principles of simple genetic algorithms (SGA) and its operation steps are introduced briefly.
分析了如何将遗传算法用于自由飞条件下的飞行冲突探测与解脱问题，并介绍了基本遗传算法的原理和运算步骤。
If the delay occurs at a connecting point, and if the flight no longer serves any purpose, then the passenger is also entitled to a free flight back to the first point of departure.
若发生在中转地的航班延误令旅行不再具有任何意义，旅客有权利搭乘一趟免费航班回到其最初出发地。
If you fly economy class for an international flight, you can check 20kg of baggage free of charge.
如果你坐国际航班的经济舱，你可以携带20公斤的免费行李。
Chasing behaviour experiments and analyses of male housefly (Musca) under a condition of free flight were reported.
本文报告了在自由飞行条件下雄蝇追逐的行为实验及其分析的初步结果。
Chasing behaviour experiments and analyses of male housefly (Musca) under a condition of free flight were reported.
本文报告了在自由飞行条件下雄蝇追逐的行为实验及其分析的初步结果。
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