The first two aircraft will be used for developmental purposes, and the next five after that will be used to train the first unit equipped, he said.

首批两架直升机将用于研发目的，并在未来五年用于培植测试机组配套设备。

youdao

Discribes the theory of air refrigerator and its application to train air-conditioning, freezing and cold storage, aircraft air-conditioning and large low temperature environmental laboratory.

主要叙述空气制冷机的原理及其在列车空调、冷冻冷藏、飞机空调和大型低温环境试验室中的应用。

youdao

At that time, China has not announced low altitude opens policy, airspace 70% it is military control, civil aircraft and train a plane and can not fly freely in the sky.

当时，中国还没有宣布低空开放政策，空域70%都是军管，民用飞机和训练飞机并不能自由地在天空飞行。

youdao

Abbey's new strategy is to turn its back on diversification to sell the junk bonds, train- and aircraft-leasing businesses and so on and shrink to its origins as a boring old British mortgage bank.

ECONOMIST: British banking

They sell power-generation equipment and aircraft and train engines.

ECONOMIST: Cleaning up

Israeli aircraft train over Bulgaria and Cyprus and have conducted war games with Turkey's neighbour and traditional rival, Greece.

ECONOMIST: Israel and Turkey