E.T.D(estimated time of departure)

The estimated time of take-off is now sixteen hundred hours.

现在预计起飞时间是十六点。

The flight has been late again by about half an hour. It is estimated the take off time will be1300.

该航班又完了半小时，预计起飞时间为下午一点。

Now it is broadcasting the take-off time for the planes.

现在正在预报飞机的起飞时间

Please look what time the plane takes off.

请留心飞机起飞时间。

Will you tell me the departure time?

请告诉我起飞时间，好吗?

The delay won't be too long

起飞时间不会延迟太久，

Would you confirm that you have got our flight plan originally. We were to take off at 0815, then it was put off until 1030.

请证实你收到我们原来的飞行计划起飞时间0815，而现已推迟到1030。

Would you check to see if Flight 334 from Shanghai is arriving in New York on schedule?

请你查查看从上海起飞的334 班机是否能按预定时间到达纽约。

The plane took off at2:30as scheduled.

飞机按原定时间于两点半起飞。

The time that the plane takes off is not still determined.

飞机起飞的时间还没确定。

time-of-flight ultrasonic flowmeter

飞行时间超声波流量计

She cut it fine when she got to the airport only five minutes before the plane took off.

她把时间抠得真紧，到达飞机场时离飞机起飞的时间就差5分钟了。

expected time of departure

预计开航时间预计离开时间

estimated time of return

预计返航时间预计返回时间

The explosion was timed to is simultaneous with the plane's take off.

把爆炸的时间定在正是飞机起飞的时刻.

The air and submarine attacks had thrown off the timing.

飞机和潜艇的袭击，打乱了预定的时间。

The Takeoff and Dispersal Behavoirs of Laodelphax Striatellus (Fallén) and Spatio-Temporal Dynamics in Fields;

灰飞虱的起飞扩散行为与田间时空动态分析

Research on Airplane Schedule Method Based on Time and Speed Optimization

基于时间和速度优化的飞机起飞调度方法研究