纵向位移是测量收缩期心肌运动幅度，显现为心肌节段的速度-时间积分。
Longitudinal displacement measures myocardial motion amplitudes in systole and visualizes the segmental velocity - time integrals.
采用在不同时间点增加阻力系数修正系数的方法拟合速度-时间曲线和位置-时间曲线。
Different drag correction coefficients at different time points are introduced, and then both speed curve and ballistic curve fitting are finished.
只要看看那条接近直线的时间-纵坐标图像和斜率明显变化的速度-时间图像，你就可以明白了。
You can tell by looking at the position graph (which shows an almost straight line) as well as the velocity graph where the slope clearly changes.
为此，提出用固支梁挠度曲线表示较快车辆的速度-时间关系曲线，由此得到了一种无格子模型。
In this paper, the deflection curve of a beam of fixed ends is used to represent the speed-time relation of the faster vehicle.
因为渡船倾斜的速度如此之快，根本没有时间把救生艇放下水。
There was no time to launch the lifeboats because the ferry capsized with such alarming speed.
"随着时间的推移，软体动物的进化速度是一致的。
Evolution of mollusks proceeded at a uniform rate over time.
各种干预措施，如抗感染药物，可以增加人口的平均存活时间，但只有那些减缓人体衰老速度的方法才能延长最长寿命。
Various interventions, such as infection-fighting drugs, can increase a population's average survival time, but only approaches that slow the body's rate of aging will increase the maximum lifespan.
我们想知道食物与被污染的表面接触的时间长短是否会影响细菌转移到食物上的速度。
We wanted to know if the length of time food is in contact with a contaminated surface affected the rate of transfer of bacteria to the food.
索尔特豪斯说：“随着时间的推移，我们通过跟踪个体对认知变化有了更深刻的认识，并可能找到延缓认知速度下降的方法。”
"By following individuals over time," Salthouse said, "we gain insight in cognition changes, and may possibly discover ways to slow the rate of decline."
按照它的使用速度，这台打印机将撑不过今年剩下的时间。
At the rate it is being used, the printer is not going to make it through the rest of the year.
照这样的使用速度，这台影印机是撑不过今年剩下的时间的。
At the rate it is being used, the photo copier is not going to make it through the rest of the year.
很多人都在赶时间，很难保持小心谨慎，因为他们更关心自己的速度，而不是你的安全。
A lot of people are in a rush, and it's very difficult to keep careful, for they would rather care for their speed than your safety.
他不能太长时间地保持这种疯狂的速度。
部分挑战也来自于速度——你多快能做出答案，能否在规定的时间内做完。
Part of the challenge is speed, too—how quickly you can get these answers in terms of getting them in on time.
事实证明这很困难并可能需要很长时间，所以我会提醒每个人，是时候吃东西了！希望能加快速度。
This often proves difficult and can take a long time so I will ring a bell so that everyone knows it's time to eat! Hopefully this will speed things up a bit.
交通拥堵的特点是速度较慢，行驶时间较长，车辆排队增加。
Traffic congestion is characterized by slower speeds, longer trip times, and increased vehicular queueing.
实验者带着速度旋钮回到那里，在随机的时间间隔里，他只是给他们的心跳录音带加速，然后再减速。
The experimenter is back there with the speed knob and at random intervals, he just speeds up the tape of their heart and then slows it down.
虽然还没有发现一种速度与光一样或比光还快的物质，但科学实验已经证实，加速运动会延长旅行者的时间。
Although no form of matter yet discovered, moves as fast as or faster than light, scientific experiments has already confirmed that accelerated motion causes a traveler's time to be stretched.
虽然还没有发现一种速度与光一样或比光还快的物质，但科学实验已经证实，加速运动会延长旅行者的时间。
Although no form of matter yet discovered, moves as fast as or faster than light, scientific experiments have already confirmed that accelerated motion causes a traveler's time to be stretched.
如果你能以光速运动，你的时间就会静止不动；如果你能以快于光速的速度运动，你的时间就会倒退。
If you could move at the speed of light, your time would stand still, if you could move faster than light, your time would move backward.
口头交流速度快但持续时间短。
对于iPhone，这些网络可能比AT&T 的数据网络提供更快的连接速度和更长的电池续航时间。
With the iPhone, those networks may provide faster connections and longer battery life than AT&T's data network.
埃博拉病毒十分致命，致死速度极快，以至于在短时间内，周围没有健康的人可以再被病毒感染。
Ebola was so deadly and killed so quickly that within a short period of time, there was no one around to infect.
对于原作，志愿者的目光往往会在图画的特定区域停留较长时间，但是对于改动过的作品，他们会以更快的速度掠过。
With the originals, volunteers' eyes tended to stay longer on certain places in the image, but with the altered versions they would flit across a piece more rapidly.
服务速度变慢的原因有：如今菜单上的选择更多了，而且产品本身也更复杂，准备时间更长。
Among the reasons for the slower service, today there are more choices on the menu, and the products themselves are more complex and take longer to prepare.
当你移动得更快时，它的速度也会减慢，这意味着有一天宇航员可能会在太空中生存很长时间，以至于在遥远的将来他们才会回到地球。
It also slows down more as you move faster, which means astronauts some day may survive so long in space that they would return to an earth of the distant future.
他们有巨大的胃容量，能够在长时间段消化食物，以较慢的速度将食物转化为能量，为以后储存。
They had enormous stomach capacity, the ability to digest food over a long period, converting it to energy at a slower pace, saving it for later.
当然，行业繁荣并不总是以破产告终——地方经济在一段时间内迅速扩张，然后又回到正常增长速度的情况我们已经见过很多次了。
Of course, booms aren't always followed by busts—we've certainly seen times when local economies expanded rapidly for a while and then went back to a normal pace of growth.
如果河流在未来的平均速度加快，时钟就会比标准时间走得快。
If the rivers run faster in the future on average, the clock will get ahead of standard time.
随着时间的推移，卫星失去了推进速度，使得地球对卫星的拉力大于把卫星推离地球的力。
As time goes by, the satellite loses its speed, which makes the force pulling it towards the earth stronger than the force pulling it away.
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