Instead, external circuitry is used to change its effective length.

而是通过外部电路来计算其有效长度。

youdao

While all forms of brief therapy studied were shown to be effective for these three problem areas, they were far less effective compared to longer-length psychotherapy treatments.

对三种类型的心理问题来说，所有被研究的简易治疗都是有效的，而与长时间的心理治疗相比就没有那么好的效果了。

youdao

It is suggested to use the concept of effective bulk velocity to calculate turbulence length integrate scale.

作者建议使用有效平均速度的概念来计算湍流的积分长度尺度。

youdao

Even if experimenters bounce the beams to and fro to increase the effective length of an interferometer's arms to more than 100 kilometres, the expected difference in length between the two beams' paths still amounts to less than a hundred-millionth of the diameter of a hydrogen atom.

ECONOMIST: Fundamental physics

That argument is now reinforced by the realisation that trucking sick pigs the length of the country is a highly effective way of spreading the foot-and-mouth virus far and wide.

BBC: The pointless slaughter?

When you get over three to five feet, some of the smaller skimmers -- say, 30, 40 feet in length -- have a very difficult time operating and being effective.

WHITEHOUSE: Press Briefing