着陆

While we were waiting to land, the air-hostess told us to keep calm.

当我们等待着陆的时候，一位飞机乘务员叫我们保持镇静。

An air-hostess told us to keep calm and to get off the plane quietly as soon as it had touched down.

一位女乘务员叫我们保持镇静，等飞机一着陆，就立刻平静地离开飞机。

While we 95 新概念英语第二册 were waiting to land, an air-hostess told us to keep calm and to get off the plane quietly as soon as it had touched down.

在我们等待降落时，一位空中乘务员告诉我们要保持镇静，待飞机一着陆，就马上不声不响地离开飞机。

Airdrop landing process of special vehicles was simulated and studied with LS-DYNA.

在基于LS-DYNA的环境中对某特种车整车的空投着陆进行了数值仿真研究。

For modern aircraft, the antiskid braking system is one of the key airborne equipment and plays a very important role in safe takeoff and landing.

防滑刹车系统是重要的机载设备，对飞机的起飞、着陆安全性有重要影响。因防滑刹车系统发生故障威胁飞机安全的事故时有发生。

The effect of obstacle with special size on audibility factor of DW-ILS is analyzed,and the numerical results are obtained.

采用电磁感应定理计算出了特定尺寸障碍物对分米波仪表着陆系统航向天线辐射场的散射，得到了该障碍物对跑道中心线上可听度系数影响的数值结果，并对此做出了分析。

The landing of a helicopter in autorotation is formulated as a nonlinear optimal control problem.

本文将直升机的自转着陆过程定义为一个非线性的最优控制问题。

Gliding descent in autorotation is a maneuver used by helicopter pilots in case of engine failure.

当直升机的发动机失效后，自转下滑就成为驾驶员实现安全着陆的唯一有效手段，这需要熟练的驾驶技术。

The docile manners, however, ended at autorotation, an unpowered descent to landing that helicopter pilots practice in order to be able to respond in case of engine failure.

在驯服风度，但是，收于自动旋转，一无动力下降到着陆的直升机飞行员的做法，以便能够在发动机响应故障的情况下。

They conducted a large amount of test work with a view to evaluating the automatic engine control system, mastering single-engine piloting techniques and making engine-out landings in autorotation mode without a landing run.

他们进行了一项测试工作，查看大量的自动评估引擎控制系统，掌握单引擎驾驶技术，而且没有一个着陆滑跑使发动机在自动旋转模式来降落。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。