最大的类地行星地球的直径仅仅是最小的类木行星海王星的四分之一，而且地球的质量仅仅是其质量的十七分之一。
The largest terrestrial planet, Earth has a diameter only one quarter as great as the diameter of the smallest Jovian planet, Neptune, and its mass is only one seventeenth as great.
最近几年弗伦德博士已经成功地造出了更小版本的马达-现在的版本是直径250微米。
In recent years Dr Friend has built successively smaller versions of his motor-the current version is 250 micrometres in diameter.
因此，法国航天局筹划发射一个任务卫星，用以测量太阳的精确直径并观测变化，而卫星的名字巧妙地命名为“Picard”。
So the French space agency has designed a mission, aptly named Picard, to return precise measurements of the sun's diameter and look for changes.
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).
它异常巨大的彗核释放出大量的尘埃和气体——其彗核直径估计有18到25英里(30到40公里)——使它能够被肉眼清晰地看见。
Its unusually large nucleus gave off a great deal of dust and gas -estimated at roughly 18 to 25 miles (30 to 40 kilometers) across -appeared bright to the naked eye.
这些恒星非常紧密地簇拥在一个直径大约150光年的球型空间里，他们在这个星团中旋转，直至生命耗尽。
These stars are packed so closelytogether in a ball, approximately 150 light-years across, that theywill spend their entire lives whirling around in the cluster.
它异常巨大的彗核释放出大量的尘埃和气体——其彗核直径估计有18到25英里(30到40公里)——使它能够被肉眼清晰地看见。
Its unusually large nucleus gave off a great deal of dust and gas - estimated at roughly 18 to 25 miles (30 to 40 kilometers) across - appeared bright to the naked eye.
许多人紧张地观看和拍摄着直径近100英尺、画满圆圈和三角形图案的麦田怪圈，而有些人则晕倒在地或者不住祷告，认为是上天降下的旨意。
Many strained to see or photograph the nearly 100-foot diameter pattern featuring circles and triangles.Some people fainted or prayed, considering it a sign from above.
许多人紧张地观看和拍摄着直径近100英尺、画满圆圈和三角形图案的麦田怪圈，而有些人则晕倒在地或者不住祷告，认为是上天降下的旨意。
Many strained to see or photograph the nearly 100-foot diameter pattern featuring circles and triangles. Some people fainted or prayed, considering it a sign from above.
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.
回到17世纪，法国天文学家Jean Picard成功地测量了太阳的直径。
Back in the 17th century French astronomer Jean Picard made his mark by measuring the sun's diameter.
易操控的笔直把手和35mm直径的刹车线可以让你完美地应对马路边沿、坑坑洼洼和周五下午混乱的交通路况。 显然，这将成为让你随心所欲游走四方的代步工具。
Easy-on-the-ol'-back upright handlebars along with 35-mm tires that can handle curbs, potholes, and the Friday afternoon scramble make this your new go-anywhere, do-anything ride.
在加工端面、圆弧、圆锥以及蹊径直径相差较大的零件时，沿X轴方向进给时，固然进给速度不变，但切削线速度却不断地变化，导致加工表面质量变化。
In the end, arc, processing and ground is large diameter conical parts, along the X axis into to, is the same, but the linear cutting speed is constantly changing, the cutting surface quality changes.
用直径30毫米的球形收集器，可以更准确地测定花粉的总量。
The total amount of pollen was measured more accurately by 30 millimetre diameter globes.
推力限制解释了为什么它总是适当使用最大直径可最大限度地输出扭矩。
The thrust limitation explains why it is always appropriate to use the maximum diameter available to maximize output torque.
这些管柱闸板有效地密封了有限范围内的管柱直径。
These pipe RAMS effectively seal a limited range of pipe diameters.
用直径30毫米的球形收集器，可以更准确地测定花粉的总量。
The total amount of pollen was measured more accurately by30 millimetre diameter globes.
结果证明能较准确地预测炉内实际切圆直径。
Results show the actual tangent circle in furnaces can correctly be predicted.
试验表明：通过调节激光器的输出功率、光斑直径和扫描速度可以方便地控制熔化层深度和表面平整度。
The experimental result shows that the depth of hardened zone and smoothness of surface can be controlled conveniently by varying the power output beam diameter and scanning rate of laser light.
采用先进技术，排污能力强，无堵塞，能有效地通过直径30 ~ 80毫米的固体颗粒。
Using advanced technology, sewage capacity, non-clogging, effective through 30 to 80 mm diameter solid particles.
这部分内容意在解决大直径浅圆仓仓壁上的水平侧压力的计算问题，合理地解决了仓壁顶面以上的料堆引起的超压问题。
The content intends to solve the problem of lateral pressure at the walls of large diameter squat silos, especially the problem of overcharge caused by the top pile material.
人工林树干直径增量以地径处最大，向上逐渐变小，从枝下高处又开始增大，直到冠部。
The maximum increment of stem diameter was at bottom, diminished up to branch height, then increased to crown.
该方法速度快，精度高，实时性好，可以有效地检测钢管内表面的各种缺陷及钢管内直径。
The method has the advantages of fast speed, high accuracy, good timeliness and various faults on inner surface and inner diameter of a steel tube can be effectively inspected.
弥散圈的大小(直径)简单地决定于胶卷和该部分物体聚焦的地方有多远。
The size (diameter) of the circle of confusion depends simply upon how far the film is from where that particular detail of the image is focused.
从而可利用材料力学中求解等直径圆轴扭转刚度的一般公式简便地求出变截面阶梯轴的扭转刚度。
It can calculate the torsion rigidity of the variable section step-shaft simply using the general formula for calculating the same diameter shaft which can be found directly in material mechanics.
可以根据条状催化剂的直径和长度要求，灵活地调节切粒操作参数。
It's operation parameters can quickly be regulated according to the required diameter and length of the extrudate.
以溪南水电站为例，说明小型引水式水电站可以通过造价增加值收益率来科学合理地选择压力钢管的直径。
Take Xinan hydropower station as an example that small type hydropower station as a diversion can select reasonably diameter of pressure steel pipe according to the value increment yields.
顶出板组件的运动有力地把实体新棒从环形套管拉出，因此使环形套管在直径上收缩。
The ejector plate assembly's movement effectively withdraws the central mandrel from the collapsible sleeve, thereby causing it to contract in diameter.
顶出板组件的运动有力地把实体新棒从环形套管拉出，因此使环形套管在直径上收缩。
The ejector plate assembly's movement effectively withdraws the central mandrel from the collapsible sleeve, thereby causing it to contract in diameter.
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