1.
Technology Controlling Grassland Desertification by Helicopter Seeding Grass in High Cold and High Altitude Area
高寒地区利用直升机飞播种草治沙技术
2.
An airplane built to fly vertically as well as forward.
垂直升降飞机一种既可向前飞亦可垂直飞行的飞机
3.
A vertical takeoff aircraft is one that can rise straight from the ground.
垂直起飞的飞机是一种能竖直地离地升空的飞机。
4.
helicopter flight dynamics
直升飞机飞行动力学
5.
The seed was sprayed over the ground in huge quantities by airplanes. The planes had been planting seed for nearly a month when it Began to rain.
飞机把这些草籽大量地撒在地面上,一直播种了将近一个月,雨季才到来。
6.
The helicopter flew up vertically
直升机垂直向上飞起。
7.
To travel by helicopter or transport(someone or something) by helicopter.
用直升飞机乘直升飞机飞行或用直升飞机运载（人或物）
8.
The relatively new close-spaced drill is an ideal machine for drilling grass seeds.
比较新型的小间距直播机是直播草种的理想机器。
9.
A place for helicopters to land and take off.
直升飞机场用于直升飞机着陆或起飞的地方
10.
helicopters and parking apron equipment;
直升飞机及停机坪设备；
11.
helicopter rigid frame system
直升飞机机身硬架系统
12.
It was not long before a helicopter arrived on the scene,
不久，一架直升飞机飞抵飞机失事现场，
13.
A jet flies much faster than a helicopter.
喷气飞机比直升飞机飞得快得多。
14.
He sketched dozens of propeller-driven helicopters, parachutes, and ornithopters with flapping wings,
他设计了几十张靠螺旋桨驱动的直升机、降落伞和扑翼飞机草图，
15.
The airplane zoomed over the top of the mountain.
飞机陡直上升，越过山顶。
16.
helicopter autopilot
直升飞机自动驾驶仪
17.
Another helicopter was shot down.
又一架直升飞机被击落。
18.
HELP (Helicopter Electronic Landing Path )
直升飞机电子着陆系统