查询词典 arc length

The results of simulation under different current, arc length and capacity of airstream show that the trends of change are in good agreement with arc theory. This can be considered a proof of exactness in the simulation.

对改 变电流、弧长和气流量对电弧各物理特性影响的模拟结果表明，其变化趋势与电弧理论基本吻合，同时也证实了该模拟的可靠性。

Meridian arc length used to develop the length of units, is already being used in China.

用子午圈弧长来制定长度单位，在中国早已采用。

About the Calculation of Arc length of the Oriented Smoth Curve or Jordan;2. The experimental results show that the optimum melting voltage is 35～36 V,the reasonable arc length is 25～29 mm.

以海绵钛和中间合金压制的电极经两次熔化得到的TC11合金铸锭为原材料，采用真空自耗电弧炉，在不同的电压下熔炼3次TC11合金铸锭，研究熔化电压、弧长与TC11合金铸锭扒皮深度和扒皮量的关系。

Cut six lengths of seam binding which are long enough to span the entire arc length of the canopy, with a little extra length that may be trimmed later.

削减6长度煤层具有约束力，这是足够长的跨度，整个弧长的天篷，一点点额外的长度可能削减后。

Third, in processing, the arc length of cutter on the pitch curve was equal to be the length of cutter rotating around its axis in order to guarantee the generating between the pinion cutter and the blank.

第三，在加工过程中，为保证刀具和齿坯之间的范成关系，刀具在齿坯节曲线上滚过的弧长等于刀具绕其自身回转中心转过的弧长。

Based on the arc length formulae of the parallel to the easement curve and its property, this paper gives the parameter equations of the parallel to the easement curve taking the arc length itself as variable.

基于缓和曲线平行线弧长公式及其性质，给出了缓和曲线平行线以其自身弧长为变量的参数方程。

It was found recently that magnetic arc blow, inherently happens with such kind of welding process, particularly in deep groove welding of the first layer, can produce various kinds of weld defects, interfere the welding operation and make the arc length control system to work unproperly.

近年来在MIG焊研究中发现电弧磁偏吹现象严重，特别是坡口对接封底焊，会造成多种焊缝缺陷，甚至无法进行焊接，还会造成弧长闭环控制系统混乱。

Butt Weld and docking and corner combinations Weld, in Weld ends located arc plate and extraction plate in igniting board then leads to the welding seam, joint halfway shall weld joints in front of 2.0 mm Department Firing arc, welding pieces after preheating rod will return to weld the origin, pool filled to the required thickness, before forward welding; Welding speed : Isokinetic welding requirements to ensure weld thickness, width uniform, which masks to look for hot metal and slag bath equidistance (2-3 mm)%; Arc welding rod length : different models and determined that the general requirements of arc length is stable, acid electrode generally 3-4 mm, 2-3 mm normally alkaline electrode%; Welding perspective : According to determine the thickness of two pieces of welding, welding angle has two aspects : First, the angle between the direction of the rod and welding of 60-75 ; The second is the angle between two electrodes and welding around, the same thickness as welding, welding and welding pieces incident angle of 45 ; When the thickness ranging from welding, welding electrode and thick and thin pieces of welding electrode side angle greater than the angle between the side pieces; Arc : admission to the end of each weld should be filled crater, in the direction opposite to the direction of the back-arc welding, arc welding unchanged inside pit in 1974, to prevent the crater bite of meat.

对接焊缝及对接和角接组合焊缝，在焊缝两端设引弧板和引出板，必须在引弧板上引出后再焊到焊缝区，中途接头则应在焊缝接头前方15～20㎜处打火引弧，将焊件预热后再将焊条退回到焊缝起始处，把熔池填满到要求的厚度后，方可向前施焊；焊接速度：要求等速焊接，保证焊缝厚度、宽度均匀一致，从面罩内看熔池中铁水与熔渣保持等距离（2～3㎜）为宜；焊接电弧长度：根据焊条型号不同而确定，一般要求电弧长度稳定不变，酸性焊条一般为3～4㎜，碱性焊条一般为2～3㎜为宜；焊接角度：根据两焊件的厚度确定，焊接角度有两个方面，一是焊条与焊接前进方向的夹角为60～75 ；二是焊条与焊接左右夹角有两种情况，当焊件厚度相等时，焊件与焊件夹角为45 ；当焊件厚度不等时，焊条与较厚焊件一侧夹角应大于焊条与薄焊件一侧夹角；收弧：每条焊缝焊到末尾，应将弧坑填满后，往焊接方向相反的方向带弧，使弧坑甩在焊道貌岸然里边，以防弧坑咬肉。

In addition, the effects of current, cathode cone angle and arc length on the current density and arc pressure distribution at anode surface in GTA welding are analyzed by the use of the built arc model, and the computed results agree well with the experimental results.

另外，运用建立的电弧数学模型，分析了焊接规范参数变化对直流GTAW电弧阳极表面电流密度和电弧压力径向分布规律的影响，计算结果与实验结论基本一致。

The main functions of this system are medical record management, measurement of dental arc width, measurement of dental arc length, calculation of Spee's curve distance, calculation of crowding degree, angle measurement, Bolton index analysis, mixed dentition measurement and analysis, statistical analysis, specialist system, and so on.

系统的主要功能包括：病历管理、牙弓宽度测量、牙弓长度测量、Spee氏曲线距离计算、拥挤度计算、角度测量、Bolton指数分析、混合牙列期测量分析、统计分析，以及专家系统，等等。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。