查询词典 precision clock

But in those occasions which require high precision such as electronic analytical balance, the close-loop mode must be employed to improve the precision of measurement.

但在高精度测量条件下，如电子分析天平，则必需采用闭环控制引入反馈环节，提高测量精度。

For general engineering problems, the analytical transformation rules are sufficiently accurate to design the similar cascade profile, but further improvement of the precision is limited by the one-dimensional assumption of the transformation, therefore an inverse blade design method—influence matrix method, based upon the surface vorticity model, is developed to improve the precision effectively.

进一步讨论了在具有相同表面压力系数分布的情形下，进口马赫数对附面层发展的影响，发现在一定条件下，只要表面压力系数的分布相似，则叶面附面层发展情况及无量纲气动力参数也将存在相同精度的相似，这一结论使我们在进行相似流场模拟的模型设计中，得以只进行无粘流场之间的相似变换，从而大大减少相似模型设计的工作量和复杂性。

The check and measure methods of Bragg angle step and precision etc. parameters with high precision autocollimation are investigated.

针对同步辐射光束线中的弧矢聚焦双晶体单色器，研究了高准确度自准直平行光管对Bragg转角的步长分辨、转角准确度等参量检测的方法。

The precision of photoelectric Autocollimator in our country is low, so the research of how to improve its precision is necessary.

国内光电自准直仪的精度较低，提高光电自准直仪精度的研究势在必行。

We automatically, External precision grinding systems, automatic surface Superfinishing center, laser welding and other sophisticated machining equipment to control the pre-processed products; fully automated computer-to the seizure, high-precision pressure tester and computer China-test plane, and other advanced product detection system to control the finished product assembly and testing of each link to a round of the device, inductors micrometer, and other sophisticated equipment to control the auxiliary equipment running and operation of the accuracy of the process.

我们以自动内、外圆精密磨削系统，全自动表面超精加工中心，镭射焊接等先进的机械加工设备来控制产品的前期加工；以全自动电脑分检、高精度压力测试仪和电脑泄程测试专机等先进的产品检测系统来控制产品装配和成品检测的每一环节；以圆度仪、电感测微仪等精密的辅助设备来控制设备运行和运行过程的精确性。

In order to improve the precision of registration algorithm and the quality of reconstructed image, an image registration method with sub-pixel precision is proposed, and super-resolution reconstruction is performed through iterative back projection algorithm.

提出了一种具有子像素级精度的图像配准方法，并通过迭代反投影算法进行超分辨率重建。

In this dissertation, GPS baseline solution precision is analyzed since the following aspects: 1, Different length baselines are processed and analyzed by single frequency model and ionosphere free model. 2, Basing on current single point positioning precision, certain coordinate error is added into fixed points to study the result. 3, Baseline is processed and analyzed with different observation vectors and their lineal combination models. 4, 24 hours observation was divide up to process baseline.

本文从以下几个角度研究了影响GPS基线解算精度的因素：1、采用单频和消电离层模式对不同长度的基线分别解算，对处理结果进行分析。2、根据目前单点定位精度给起始点加上适当的坐标偏差，研究起始点坐标偏差对基线处理结果的影响。3、选用不同的观测值及其线性组合，对基线解算结果进行研究。4、对24小时观测的数据分时段处理，分析观测时间段对基线处理结果的影响。

The text analyses GPS observation model, the characteristic of kinds of errors fountain and the adopting measures in the observation, and processes the thorough research to Bernese GPS Software Ms-Windows Version 4.2. It makes the most stable satellites as the main error. The differential way adopts non-differential way and double differential way. The positioning precision of the single point is decimeter level. RMS is within 0.01~0.02; If the ambiguity right and without week skip, the observation datum of a EPOCH-BY-EPOCH can make the short base line（S0km）positioning precision reach centimeter level.

本文分析了GPS的观测模型、观测量中各种误差源的特点及应采取的措施，并对Bernese GPS Software Ms-Windows Version 4.2 软件进行了深入的研究，它是以最稳定的卫星作为主差，采用非差和双差两种差分方法，单点定位精度在分米级，RMS能在0.01~0.02以内；在模糊度已求解正确条件下，若没有周跳，一个历元的观测数据就可以使短基线（S0km）定位精度达到厘米级。

Bit Arithmetic 64位算术运算 Modern 32-bit software frequently uses larger-than-32-bit integer data types for various purposes such as high-precision timers, high-precision signal processing, and many others.

现代32位的软件在表示高精度的计时器，进行高精度信号处理，及其他一些情况下经常使用高于32位的整型数数据类型。

Now, there're tens of manufacturers, including Yangdong Stock which produces small-bore (80, 85) multi-cylinder diesel engineers; Jiangsu Shuangdeng Power Supply which produces valve-controlled sealed lead-acid battery, sealed traction battery and gelled battery; Jiangsu Feichuan Stock which produces gear and auto parts; Jiangsu Gangyang which produces crankshaft connecting rod assembly of motorcycle engine; Jiangsu Yafang Cooling which produces medium and heavy duty truck air conditioning system; Jiangyan Sutai Friction Material which produces clutch facing, brake block and brake band; and Jiangsu Pacific Precision Forging which produces cold precision forging, cold extrusion special-shaped part and gear.

现有生产厂家数十家，主要是生产80、85小缸径多缸柴油机的扬动股份有限公司；生产阀控密封铅酸蓄电池、密封牵引蓄电池、胶体电池的江苏双登电源有限公司；生产齿轮、汽车零部件的江苏飞船股份有限公司；生产摩托车发动机曲轴连杆组件的江苏罡阳股份有限公司；生产中重型卡车空调系统的江苏亚方制冷有限公司；生产离合器面片、刹车片、刹车带的姜堰市苏泰摩擦材料厂；生产冷精锻、冷挤压异形零件、齿轮的江苏太平洋精密锻造有限公司等企业。

He got into race cars, while my father liked go-karts more, so I didn't really pay attention to what Diego was doing, as I was just racing karts.

叔叔开的是跑车，而我父亲更喜欢越野卡丁车，所以我并不太关注Diego在做什么，我仅仅在跑我的卡丁车而已。

She is at present gone to look for the best nectar and ambrosia to regale me this evening.

她今晚为款待我，现在又去准备美酒佳肴去了。