Astronomers who study star clusters have noticed that the speed at which a star of a given mass spins (measured by tracking cool, dark spots on the surface) also seems to vary predictably with age.
研究星团的天文学家已经注意到质量一定的行星(通过追踪表面阴暗冷却斑点来测量)，其旋转速度随着其星龄呈现可预测性的变化。
For this reason, the speed of a grinding wheel should not exceed the safe surface speed limit specified by the manufacturer.
基于此原因，砂轮的速度不应超过制造商规定的安全表面速度的限制。
By recovering surface height of a synthetic image and comparing the result and converging speed with traditional iterative method, the feasibility of the approach is verified.
对合成图像进行仿真，并将表面恢复结果和算法收敛速度与传统的变分迭代方法比较，验证了算法的可行性和实时性。
The line width of nanostructures is influenced by many factors such as tip curvature radius, detained time in the base surface, scanning speed, humidity, surface roughness etc.
尖端曲率半径、针尖在基底表面滞留时间、针尖扫描速度、空气湿度、表面粗糙度等均会影响纳米结构的线宽。
Carried by H-5 bomber or Q-5 attacker, the Yu-2 was designed to fly using rocket engine in air at high speed before it hits the water at a very close distance to the surface target.
由轰- 5型轰炸机或强- 5型强击机携带，鱼- 2型设计采用火箭发动机在空中高速飞行，当在非常接近到水面目标的距离时进入水面。
By the model forecasting the processing speed and surface roughness under some processing requirement, find out the processing law.
通过该模型对一定加工条件下的切割速度和表面粗糙度进行预测，从中找出加工规律。
More attention was focused on the effects of osmosis on the deposition speed, compositions, surface structure properties of the simultaneously deposited Pd-Ag alloy top layer by electroless plating.
重点研究了渗透压对化学镀共沉积钯银的沉积速度、镀层组成和膜表面结构性能的影响。
It is considered that this phenomenon is caused by difference of saddle surface speed between two pulleys.
环拉力在带的各边不同，这种现象由于两带轮间支承面速度不同造成的。
Because of the effect of CPU-calculating speed, the procedure of machining is carried out point by point from calcuation to cutting intermittently , leading to poor surface quality on the workpiece.
通过反复改变工艺系统的参数，最终有效地提高了工件的表面质量，保证了工件的加工精度，从而在由工艺系统弥补编程系统的不足方面做了有益的尝试。
It is found that the surface roughness influenced by wheel speed and grinding depth can be attributed to the changing of undeformed chip thickness.
研究发现：砂轮速度和磨削深度对表面粗糙度的影响都可归结为未变形切屑厚度的改变。
The results indicates that the rougher the membrane surface morphology is, the faster the speed of flux decline, and the harder to recover by chemical cleaning.
结果表明，超滤膜表面形貌愈粗糙，膜通量的衰减速率愈快，且化学清洗后恢复愈困难。
The experiment showed that the high quality surface roughness was easy to obtain by increasing the cutting speed and decreasing the feed engagement.
高速切削试验表明：切削速度的提高和每齿进给量的减少有利于改善加工表面粗糙度。
Analysing the necessity of acquiring the speed of the crust vertical motion and separating the lithosphere and surface by subdividing the massif except the unitary mainland.
分析了除按大陆整体推求垂直运动速率外，按地块分区推求地壳垂直运动速率，地壳、地表垂直运动分离的必要性。
The pressure field measurement results on the wing surface of airplane model by luminescence pressure sensor (LPS) technique and classic tap technique in high speed wind tunnel are presented.
介绍了国内首次在高速风洞中使用荧光压力传感器(LPS)技术对飞机模型机翼表面压力场测量的初步结果。
The fractal dimension of high speed milling aluminum alloy surface micro-topography is calculated by the structure function method.
采用结构函数法计算出高速铝合金铣削表面微观形貌的分维数。
A layer of chemical film can be formed on the surface of solid through chemical reaction. The quality of film is decided by the speed of chemical reaction of film surface.
通过化学反应可以在某些固体表面上形成一层化学薄膜，膜的质量是由成膜时膜表面的化学反应速率决定的。
The composition of molten steel, cast speed and mould level changing are thought to be main reasons of causing surface longitudinal cracks by analyzing producing data.
对生产数据进行分析，认为钢水成分、拉速和结晶器液面波动等是造成连铸坯表面纵裂的主要原因。
The initial typhoon circulation is a bogus pattern determined by the central surface pressure and the maximum wind speed of the typhoon being predicted.
初始台风环流是由台风中心海平面气压与最大风速所确定的一个模型环流。
In this paper, typical surface defects of low carbon steel high speed wires for cold-heading have been examined by using SEM and EDS.
采用扫描电镜和能谱仪对低碳冷镦用高速线材表面缺陷进行了分析，同时对轧制中间料的缺陷和成品冷镦标准件开裂样品进行对照分析。
A saddle surface was measured by the grating non-contact method and the experiments indicated that the method had a feature of speed, precision, and operability.
采用光栅非接触测量方法对马鞍型曲面测量，结果表明，该方法速度快、精度高、可操作性强。
The utility model can reduce the strength and speed of a descending welding head to a frame surface, and the utility model efficiently overcomes chip incline caused by poor back flowing of lead tin.
本实用新型可减缓焊头下降到达框架表面的力量和速度，有效地克服由于铅锡回流不良而引起的芯片倾斜。
Inadditions, in the other rotations speed (2000, 3000 and 5000 rpm), the CR wasaffected by the corrosion products formed on metallic surface.
此外，在其他的转速下（2000、3000以及5000转每分钟），腐蚀速率受金属表面腐蚀产物的影响。
Products produced by the high speed rolling mill have those advantages as heavy coil weight, less surface scale and precise dimension tolerance.
高速线材轧机生产的产品具有盘重大，表面氧化铁皮少，尺寸公差精确等特点。
Recently the aspheric surface's machining is a difficult problem, so a new method was proposed that aspheric surface workpiece was high speed lapped using lapping tool made by means of bending.
针对目前非球面加工的难题，提出了一种利用弯曲成形法制作磨具来实现非球面高效研磨的新方法。
Enhance the speed of the computer in process graphics by upgrade the projection matrix and Visible-surface detection, and let the graphics achieved show the problem that user care most.
对投影矩阵和消隐算法等进行了改进，使计算机处理图形的速度得到了很大的提高，同时使最后得到的图形更能准确的显示用户所关心的问题。
By regulating the gap between the high-speed rubber roller and fixed roller, it can easily even the glue on the surface of the film and make it paste into the paper.
通过手柄可方便地调节胶辊与固定辊的间隙，使胶水均匀地涂布于薄膜上并与纸张粘合在一起。
By regulating the gap between the high-speed rubber roller and fixed roller, it can easily even the glue on the surface of the film and make it paste into the paper.
通过手柄可方便地调节胶辊与固定辊的间隙，使胶水均匀地涂布于薄膜上并与纸张粘合在一起。
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