段长

The increments of the contraction ratio and the convergence angle strengthen the internal compression.

用N-S方程模拟了一系列典型二元高超声速进气道内压缩通道及隔离段模型，模拟发现内压缩通道及隔离段增压比、温升比和总压恢复系数等性能参数主要受面积收缩比、内压缩通道收缩角、隔离段长高比等几何参数以及内压缩通道进口马赫数、密度、附面层厚度等流动参数的影响。

Fitzgerald added that understanding and processing pain is something that is learned over a long period of time.

菲茨杰拉德教授对此表示，感受并处理疼痛需要经过一段长时间的学习。随着这些早产儿的成长，他们对疼痛的敏感性也在逐渐增强。

Afterward, with some consecutive creaks, a gate on the enclosure is slowly opening and a floating bridge, which is consisted of several sections of long wooden board and inflated leather sacks, stretches until the shore.

於是城上的弓箭手和岸边本来在攻击童氏族人的金乌等都暂止攻势，接著一阵连续的唧嘎声响，围墙上的一道闸门缓缓打开，一座由好几段长条木版和充气皮囊组成的浮桥伸了出来，直到岸边；童博来到桥头，让心灵还是待在岸上注意敌人情况，豆豆跟小凤在空中监视箭手，然后沿桥走去，跟从桥中段爬上去的战雪在城门会合

Folk medicine flourished long before the development of scientific medicine and was more successful in ancient times than doctor medicine.

民间医学在科学医学的发展之前兴盛了一段长时间，在古老时期的发展比医生医学更成功。

It may be said to have officially terminated that period of half a century of agitation occasioned by the signing of the formulary.

可以说已经正式结束这段长达半个世纪的激动所引起签署了处方。

His rule (31 BC-AD 14) brought changes to every aspect of Roman life and lasting peace and prosperity to the Greco-Roman world.

在位期间（西元前31～西元14年）改变了罗马人生活各方面，希腊罗马世界进入一段长时期的和平与繁荣时期。

After a long search it was wonderful to be able to see how the Lord led us to buy our half-way house.

在一段长时间的寻觅后，很奇妙的看到上帝如何带领我们买下中途之家。

If you leave it long enough, the cancer may have spread so that it is inoperable.

如果你把这问题搁置一段长的时间，癌细胞可能已经散开，以致不能动手术。

The design of the 3-dimensional trajectory in horizontal wells is an optimal control system where the state variables are azimuth, inclination and the control variables are radius, tool-face angle and length of curve.

水平井三维轨道设计是以方位角、井斜角为状态变量，以曲线半径、装置角、曲线段长为控制变量，以入靶精度等为性能指标的非线性多阶段最优控制系统。

We also need to have a rest after a long period of reading.

我们也需要休息经过一段长时间的阅读。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。