在火星上，直径小于5公里的陨石坑相对较少。
On Mars, there are relatively few craters less than 5 kilometers in diameter.
在树根处砍一个缺口，缺口的深度应该是树木直径的80%，其角度大约为70度。
Cut a 70-degree notch into the tree with a length of 80 percent of the trunk’s diameter.
在清晰的风暴中心周围环绕着纹理粗糙的云层，风眼的直径大约有25千米。
Rough-textured clouds surround the storm's distinct eye, which has a diameter of roughly 25 kilometers.
巨磁电阻(GMR)效应使这样一个驱动器的直径不到一英寸，检测在便携式电子设备中存储数据的微小的磁场。
The giant magnetoresistance (GMR) effect allows drives like this one, less than an inch in diameter, to detect the tiny magnetic fields that store data in portable electronic devices.
最高的乾德拉格普1号峰高约100米（330英尺），在火山口有一个直径约15米（49英尺），定期泛滥的泥浆火成湖。
The tallest volcano, Chandragup I, is about 100 meters (330 feet) high, and it has a 15-meter- (49-foot-) diameter mud lake in its crater that periodically overflows.
因此，查特基博士认为，一个直径40千米的物体在印度海岸撞击地球，造成德干地盾喷发大量熔岩。
Dr Chatterjee therefore suggests that an object 40km in diameter hit the Earth off the coast of India and forced vast quantities of lava out of the Deccan Traps.
在知道了地球轨道的直径和恒星变化的角度，我们就能计算出它的距离。
From knowing the diameter of the Earth's orbit and the apparent angular movement of the star, we can calculate the distance to it.
这块直径约为15厘米的菲斯通盘出土于克里特岛，目前陈列在伊拉克利翁展览馆最显耀的展位上。
The disc, about 15 centimetres in diameter, occupies pride of place at the Heraklion Museumin Crete.
脊髓只有不到两英尺长，它的直径也只相当于你的食指粗细，但是在它之中有超过一百亿的神经元细胞。
The spinal cord is less then two feet in length and is the same diameter as your index finger, yet it contains over 10 billion nerve cells.
一个纳米颗粒组合由直径在零点五到五纳米的金属粒子组成。
A nanoparticle array consists of metal particles with a diameter of 0.5-5 nanometers.
每根硅线的长度在30至100微米(micron)之间，直径仅为1微米。
Each wire measures between 30 and 100 microns in length and only 1 micron in diameter.
这个洞的直径在55英尺(约为16.8米)至65英尺，深75英尺。
It measured between 55 and 65 feet in diameter and about 75 feet deep.
水星在地内行星中是最小的行星（直径4 880公里），同时也是靠太阳最近的行星（5800万公里）。
The planet Mercury is the smallest of the inner planets (4, 880 km/3, 032 mi in diameter), and the closest to the Sun (58 million km/36 million mi - or 3.2 light minutes).
直径为180亿光年(每个方向90亿光年)在可观测事物中是一个可观的比例。
A diameter of 18 billion light-years (9 billion in each direction) is a considerable percentage of observable reality.
Braun博士最开始采用的材料正是他在自然纳米技术杂志所描述的那样，是由直径为百万分之一米紧密排列的聚苯乙烯小球组成。
His starting material, as he describes in a paper in Nature Nanotechnology, is made of closely packed polystyrene spheres about a millionth of a metre in diameter.
在P - Ink里，晶体的成分是直径为200纳米的微型硅珠。
In P-Ink, the elements of the crystals are tiny beads of silica, 200 nanometres in diameter.
在杂志《糖尿病治疗》中（PDF），一组研究人员研究了最容易被忽视的一些微粒——仅限于直径小于2.5微米的。
Writing in the journal Diabetes Care (PDF), a team of researchers looked at the most insidious of these particles -- only those smaller than 2.5 micrometers in diameter.
其目的在于，在2020年将90%的覆盖范围延伸到附近更小的星体上，这包括直径大于140米的全部星体。
This is aimed at extending the 90% coverage level by 2020 to smaller nearby objects-all those bigger than 140 metres across.
最高法院的声明说，扫描显示在胰腺中部有一个大约直径一厘米的癌组织。
A scan revealed a small tumor, approximately one centimeter across, in the center of the pancreas, the court's statement said.
在屏幕上方有一个隐藏的装置，在小丹尼尔的眼睛跟随火车的运动时，跟踪他的眼睛，并且在一秒钟内，测量了他的瞳孔的直径50次。
A hidden device above the screen is tracking Daniel's eyes as they follow the train and measuring the diameter of his pupils 50 times a second.
但是据进一步的观察，阿波菲斯小行星撞击地球的威胁程度评估被降低，现在的预测，这颗直径为270米的空间岩石在2029年撞击地球的可能性为零。
After further observations, the threat of an Apophis impact was lowered, and now the chance of the 270 meter space rock hitting us in 2029 is zero.
他们使用的“画布”很小——只有几厘米直径的圆形培养皿，所以就只能使用很小的“画笔”来蘸取少量细菌，然后涂布在培养基上。
Using a small paintbrush dipped in the bacteria, they are painstakingly 'painted' onto the tiny canvas - a petri dish only a few centimetres wide.
这两种物质分别排列在直径小于50纳米的球体中。
The two substances themselves are arranged in tiny spheres less than 50 billionths of a metre across.
在造山活动中，火山口中心地带提升，产生了一个直径约7公里的小型火山口。
During an impact event that creates a crater, central uplifts or mounds form on the floor of the crater in craters larger than 7km in diameter.
伴随着巨大的烟云，在尼拉贡戈火山直径一英里的火山口里，熔岩在像一口锅里一样上下翻滚。这座位于刚果境内的活火山威胁着两百万人民的生命财产安全。
Exhaling clouds of gas, a cauldron of lava boils in the mile-wide crater of Nyiragongo, an active volcano in the Congo that threatens two million people.
第谷•布雷赫是16世纪的丹麦天文学家，月球表面的那座环形山就是以他的名字命名。 此山在靠近月球的南极，直径达85公里。
The lunar crater named after Tycho Brahe, a 16th century Danish astronomer, near the moon's south pole, is 85km across.
通常，大多数颗粒的直径在50至100微米(米的百万分之一)之间。
Most ash particles are normally 50-100 microns (millionths of a metre) across.
在几年之内，晶圆厂将生产出直径为四百五十毫米的晶圆，超出现在的300毫米，从而进一步提高产能。
Within a few years fabs will be producing wafers with a diameter of 450mm, up from 300mm now, making them even more productive.
在几年之内，晶圆厂将生产出直径为四百五十毫米的晶圆，超出现在的300毫米，从而进一步提高产能。
Within a few years fabs will be producing wafers with a diameter of 450mm, up from 300mm now, making them even more productive.
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