查询词典 arc

In comparison with traditional machine tools with cradles, the new machine tools have many outstanding advantages, such as the mechanical construction is simpler and more compact, machine setting can be basically carried out using software, and the machine is provided with more abundant machining potentiality, and what more important is that both circular-arc and extended epicycloid bevel gears can be machined on the same generators.

与传统摇台类机床相比，这种新型机床有许多突出的优点，比如机械结构更加简单紧凑，机床参数基本利用软件进行调整，有更加丰富的加工潜能等。

The Sun's Parallax: The size of the earth as viewed from the Sun and expressed as an angle and generally taken to be 1/2 the diameter at the equator is 8.9008091 seconds of arc using 91848,817 miles as the mean distance to the sun and 3,963.4914 miles as the equatorial radius.

太阳的视差：作为太阳和地球的大小看作为一个角度表达，普遍采取的是1月2日在赤道，直径为8.9008091弧用平均91848，817英里秒距离太阳和赤道半径3，963.4914英里。

The mathematical models of the delay of the GPS signal in the circumstance are put forward respectively. The computation of orbital arc of the two satellite constellations is based on two body problem and perturbations models. An algorithm based on the IRI model and thin layer model is used to simulate the ionospheric delay of the GPS signal. The error models of observation, multipath, relativity and antenna phase center bias are also researched. Under the consideration of the autocorrelation of the electronical measurements, the autoregressive model of time series is introduced into the noise models.

在信号仿真中，研究了利用二体运动和摄动法计算LEO卫星至GPS卫星星座的几何距离的问题；在信号的误差模型中，研究了电离层时延的IRI2001模型和单层投影模型；讨论了观测误差、多径效应、相对论效应和天线相位中心偏移的误差模型；结合电子测量噪声的具有自相关特性的经验，研究了观测误差的AR模型；结合实测数据分析，讨论了接收机钟差和卫星钟差的误差建模问题。

Arc Legion-Causes forks of electricity to erupt from an Evoker's Focus device.

弧形电光-从震源装置里释放出弧形电光。

Objective To investigate the therapeutic effects of arc blade holder in extracapsular cataract extraction and intraocular lens implantation through small incision.

目的 探讨弧形刀片夹持器夹持剃须刀片做小切口白内障囊外摘出人工晶状体植入术的效果。

Mr Carter has a good feel for the arc America traced from the buoyant post-war optimism of the Apollo programme across the bridge of the Vietnam war to the pessimism surrounding Nixon's fall from power.

美国从战后经济的快速增长到阿波罗计划使人们充满了乐观主义，而从越战到尼克松下台的却又使人们充满了悲观主义。卡特先生对这段时期是身有感受的。

With the an programming design of hardware and software, the problem of false regulation caused by dum-my signal is solved, and the automatic stabilizing of arc length during welding process in the designed range effectively is guarranteed.

经过硬件和软件的抗干扰设计，解决了因伪信号而引起的误纠差调整问题，有效地保证了弧长在焊接过程中自动稳定在所设定的范围内。

Advanced technology; honeycomb filter, smooth-surfaced plastic steel process and arc design suitable for water flow keep scale deposit and feculence away from felt and deposit.

技术先进。蜂巢式过滤网，表面光滑塑钢工艺及适合水流的弧形设计，使得水垢和污物不易粘结、堆积。过滤网上的污物用水一冲即可洗掉，清洁简便。

Methods: Using regressive analysis to make the exact neck-axes and analyze lateral arc of femora.

用 Excel 软件中的回归分析方法准确确定股骨颈的中轴线，并对内侧弧进行数学分析。

Requirement for arc voltage during opening of field breaker is higher and higher, for de-excitation with varistor ,generally adopted for large hydraulic generator. In fact, E.M.Fof field winding is required higher than threshold of varistor during opening of field breaker.

大型水轮发电机通常采用的非线性电阻灭磁的方法，对灭磁开关的开断弧压要求愈来愈高，其机理是要求开关开断时，磁场绕组的自感电势大於非线性电阻的残压。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。