at a speed of

Today, the Internet is high-speed prosperous and the information appear on the website every day increase at a speed of index.

Internet高速繁荣的今天，每天出现在网站上的信息成指数型增长。

The day before and the day after the acclimatization, quick walk standard tests were conducted under high temperature ( WBGT 30 3 ℃) with a load of 16 kg at a speed of 4~ 5 km/ h for 90 min with a total of 7 km.

锻炼期前一天和后一天进行高温快步行进标准试验（WBGT303℃，受试者负重16kg，以速度为4～5km/h快步行进90min，共7km）。

We're driving at a speed of about 50 miles each hour.

我们以每小时大约50英里的速度驾车前进.

The two land masses are still colliding, pushed together at a speed of 1.5 to 2 inches a year.

这两个板块仍在继续相撞，每年以1.5到2英寸（约合3.81厘米）的速度相互挤压。

A photograph taken at a speed of i-1-250 of a second

秒的快门速度拍摄的照片

The car runs at a speed of 80 miles per hour.

轿车以每小时八十英里的速度行驶。

Playing the piano, riding a bicycle, walking at a speed of 2 mph.

弹钢琴、骑电单车、以每小时2哩速度步行。

A Boeing 747 jumbo jet airliner lands at a speed of 160 m / s.

一架波音747巨型喷气式班机以160米/秒的速度着陆.

To travel at a speed of, or to complete.

以某一速度驾驶，结束。

Jack is driving his car at a speed of up to120 kph.

杰克正在以每小时120公里的高速行驶。

He drove at a speed of sixty miles per hour.

他以每小时60英里的速度开车.

The car is running at a speed of fifty kilometres an hour.

这辆小车正以每小时50公里的速度在行驶着。

An electron moves inside a TV picture tube at a speed of 5 ×??/ s.

一个电子在电视机显像管里以5×？迕祝0秒的速率运动。

A light-year is the distance light travels in one year at a speed of 299,792 kilometers per second.

一光年是光以每秒299792公里的速度在一年中所走过的距离。

Light travels at a speed of 300,000 km per second.

光以每秒30万千米的速度传播.

The plane is flying at a speed of 200 miles an hour.

飞机正以每小时二百英里的速度飞行.

The airplane flew at a speed of 500 miles an hour.

飞机以每小时500英里的速度飞行.

The train is travelling at a speed of sixty miles an hour.

火车正以每小时六十英里的速度行驶.

Mercury travels around the sun at a speed of about fifty kilometers a second.

水星围绕太阳运动的速度大约是每秒钟50公里。

It is measured at a speed of 2 m / s under load intensity of 1.96 Mpa.

它是在载荷集度为1.96Mpa和速度为2m/s时测得的.

The car went at a speed of 100 kilometers an hour.

那辆车子是以每小时100公里的速度开过去了.

They streaked down through the lunar shy at a speed of 3,700 miles an hour.

他们以一小时三千七百英里的速度向下掠过月球天空.

Raindrops fall at a speed of about 500 to 1,000 feet a minute.

雨点以每分钟大约五百到一千英尺的速度下降.

A meteor is actually a piece of matter from out of space traveling at a speed of many miles a second.

流星实际上是一块以每秒许多英里的速度，从宇宙外飞飞来的物体。

The car runs at a speed of sixty miles an hour.

那辆汽车以每小时六十英里的速度行驶.

At a speed of only 30 miles per hour it is the same as falling from a third floor window.

仅每小时行驶30英里的速度就与从3楼的窗子往下坠落效果相同。

The filaments are expanding into space at a speed of roughly 5,000 kilometers per second.

这些纤维状星云物质以每秒大约5000公里的速度向宇宙空间扩展.

He drives his car at a speed of 80 kilometers per hour.

他开车以每小时80公里的速度行驶.

The car runs at a speed of 1 km per minute.

小轿车以每分钟1千米的速度行使。

The train is running at a speed of 70 miles an hour.

火车正以时速七十哩行驶着.