查询词典 at a speed of

At any given moment the brain has 14 billion neurons firing at a speed of 450 miles per hour.

在任何时刻大脑里140亿的神经细胞以每小时450英里的速度燃烧。

This technique was modified as follows: the small rubber particles were purified and diluted to give a protein concentration of an absorbance at 600 nm of about 2.0～2.5; 0.5% basic fuchsin was prepared by being dissolved in 50 mmol/L Tris-HCl(pH7.4); the reaction mixtures were incubated for 30 min at 25 ℃, and centrifuged for 5 min at a speed of 5 000 r/min; and B-serum can serve as the protein samples for the positive control of rubber particle aggregation.

几个关键参数为：（1）使用纯化的小橡胶粒子，适宜浓度为在600 nm处的OD值为2.0～2.5；（2）用50 mmol/L Tris-HCl（pH7.4）配制0.5％碱性品红；（3）25 ℃条件下孵育30 min；（4）5 000 r/min离心5 min；（5）B乳清可作为阳性对照的蛋白质样品。

The island of Taiwan is located at the junction between the Eurasian plate and the Philippine plate. The Philippine plate moves northwestward at a speed of 7 cm/year, which leads to frequent earthquakes, therefore, using GPS base station monitoring on disaster prevention is quite important.

台湾地区位於欧亚大陆与菲律宾板块的缝合线上，菲律宾板块以每年约7公分速度朝西北方向移动，导致台湾本岛产生频繁的地震，进而突显出应用GPS基准站监测於防灾研究之重要性。

The air-speed switch is typically set to close at a speed of about 80 mph (130 km/hr).

空气高速开关通常是一套，收于速度约八〇英里每小时（ 130公里/小时）。

By using a power injector,60 ml of 75% contrast material was injected at a speed of 3 ml/sec via a 17-guage antecubital vein catheter,14 s after start of bolus the dual-phase dynamic CT scans were performed 7 times at the single level.

48例肝肿瘤患者平扫发现并定位病灶后，用压力注射器以3ml／s速度从肘静脉经17号塑料套管针注入造影剂60ml，开始注射后14s行双期动态CT，同层共扫7次。

A method of producing a thermoplastic resin film capable of giving a biaxially oriented polyester film at a speed of as high as at least 400 m/min and an apparatus therefor.

本发明提供一种以双向拉伸聚酯薄膜的制膜速度为400m／分的高速进行制膜的热塑性树脂薄膜的制造方法及装置。

His AERIAL LOCOMOTIVE, with a hydrogen-filled compartmented gas "spindle" 800 feet in length and 50 feet in diameter, was to carry between 50 and 100 people at a speed of 60 to 100 mph The great machine was to be remain aloft for 12 hours at a time, propelled by two steam engines driving two "fan wheels or propellers" each of which would be 20 feet in diameter and revolve at 200 rpm He estimated that the machine would weigh a total of some 14,000 pounds and would generate a total buoyant lift of 56,000 pounds, leaving 42,000 pounds for 200 passengers and luggage.

他的空中机车，与氢气填充compartmented气体&主轴&八百英尺在长度和50英尺，直径，是进行50至100人的速度在60至一百英里每小时伟大的机器是要继续高举12在一小时的时间，推进两个蒸汽火车驾驶&两个风扇车轮或螺旋桨&，其中每会20英尺，直径和旋转，在200 rpm的他估计，机器重量共约一四○○○磅，并会产生一个总蓬勃解除五六〇〇〇磅，离开四二零零零磅为200名乘客和行李。

The answer is wind: insanely fast, dangerous wind that whisks heat from day-side to night-side at a speed of 4,500 mph, nearly six times the speed of sound.

答案是风：疯狂，危险的风将向阳面的热量以4500mph的速度吹向背光面，这个速度相当于6倍的音速。

These jeeps had a top speed of 50 mph and a range of 40 miles at a speed of 40 mph.

这些吉普车有50英里的最高时速为40英里40英里的时速范围。

Objective To investigate bone nutritional status of neonates and their mothers as well as the correlation between them by estimating the concentrations of 25-D3, calcium and phosphorus in maternal blood and cord blood at birth, and by measuring the bone speed of sound of neonates and their mothers with quantitative ultrasound within 3 days after birth. Methods The concentrations of 25-D3, calcium and phosphorus in the serum were estimated both from 32 pregnant women who had a term delivery and from the umbilical cord at birth.

摘 要：目的通过对产妇及其新生儿在分娩当天进行血25-D3、血钙和血磷浓度的测定以及在产后3 d内采用骨定量超声仪对母儿进行骨超声波速度(speed of sound，SOS)的测量来评价母儿的骨营养状况和两者的相关性。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。