查询词典 limit point

Such as burning glass electric rice cookers, electric heated glass cookers, electric Niunaibei glass, glass, electric heated rice bags, glass, such as electric ovens A diagnostic radiology, with the ray protective devices, including the limited-hole plate (4), limited-hole plate (1), servo motor, with the upper limit switch (3), limit switch (7), and so on, installed in the activities Bed-shading of the ball before relying on the upper and lower limit switch servo motor control circuits and chain control, automatic transform limited-hole plate position, perspective and point of excess-ray films blocked so that patients and doctors have been reliable protection .

诸如玻璃电热烧锅、玻璃电热暖锅，玻璃电热牛奶杯、玻璃电热恒温电饭包、玻璃电热烤炉等一种放射线诊断时用的射线防护装置，包括方孔限光板（4）、圆孔限光板（1）、伺服电机、上限位开关（3）、下限位开关（7）等，装设在活动床球管遮光器前，依靠伺服电机上下限位开关及控制电路进行连锁控制，自动变换圆孔限光板的位置，将透视和点片时的多余射线遮挡住，使患者和医生都得到可靠的防护。

Firstly, This paper processes geometry filtration based on character of orbit's apogee and perigee after orbit model is analyzed and based. Secondly Space Debris is separated into two kinds, coplanar and not coplanar according as location interrelation of target and debris. In Dynamic filtration's processing, considering prediction time limit and orbit perturbation, secular effects which have increaser effect is considered so that some need catching danger time point is appeased, some law about time when target and debris pass intersectant line each other is inferred, when debris and object are in different plane and some similar law also is inferred otherwise. The time list is arithmetical progression. These laws can improve calculation efficiency remarkably; Lastly orbit predict is a course approaching least distance. Danger time point in the last step become beginning time point from which debris and object's position and velocity are calculated by SXP4 Model which is an analytic model.By result, determine that relative movement trend is closer or apart, farther calculate the interval apart from time when predictive least relative distance occurs. Least relative distance and time when least distance occurs is calculated finally. It is a fast approach course adopting varied interval.

本文在分析、建立轨道摄动计算模型的基础上，首先采用基于轨道远、近地点特征对大量编目在册的空间碎片进行初步几何静态筛选，然后根据碎片与目标轨道面的相对位置特点把碎片分为异面与准共面两种情况以进行动态筛选，在筛选过程中考虑到预报时限长度和轨道摄动影响，引入了轨道摄动中具有积累效应的长期项以满足危险时间点的捕捉要求，利用了长期项摄动变化线性的特点导出了碎片与目标异面情况下各自过交线的时间序列成准等差数列的规律性和准共面情况下类似的规律性，从而显著地提高了前期轨道筛选的计算效率；最后对剩余危险碎片和目标飞行器利用SXP4轨道预报模型在前期轨道筛选的基础上以各个危险探测时间点为预报的时间起点，并根据预报计算结果，分析目标和碎片在该时间点的运动趋势是相互远离还是相互接近，推出预计最小相对距离发生时刻相对此刻的时间长度，得到其随时间变化的局部最小相对距离以及危险距离发生的时刻和相对速度，这是一个采用变时间步长、快速逼近最小相对距离的过程。

By the analysis of dive and horizontal plane nonlinear model, the catastrophe model on de dive plane is deduced, and catastrophe stability is analysized. In the horizontal plane, simplified equation is gained by center manifold theory, then draws the conclusion that the stability of limit circle arises from critical point is relate to small difference of move point and critical point.

通过对潜艇垂直面和水平面非线性运动模型进行分析，导出垂直面运动的突变控制模型，并进行了突变稳定性分析；在水平面运动的非线性分析中，通过中心流形定理简化方程，得出临界点处极限环的稳定性与微差占的符号有关的结论，这样在无法或很难得到李亚普诺夫函数的情况下，可以通过这种方法判别临界点的稳定性。

This paper introduces the Taylor formula of one dollar and multi-definition, then the proof of the value from the formula, respectively, that inequality in the value of derivatives is estimated that about industry estimates, demand infinity limit, the median point of the limit function limits, approximation, function equations and so on Taylor formula to do the induction.

本文首先介绍了一元和多元泰勒公式的定义，然后分别从证明中值公式，证明不等式，导数的中值估计，关于界的估计，求无穷远处的极限，中值点的极限，函数的极限，近似计算，函数方程中的应用等方面对泰勒公式的应用做了归纳。

In Chapter 4, we study the center conditions and the bifurcation of limit cycles at a degenerate singular point as well as that at infinity for a quintic polynomial system and prove that the system has 5 limit cycles around the origin and 2 limit cycles around infinity.

在第三章中，我们分别研究了一类三次多项式系统、一类五次多项式系统、一类七次多项式无穷远点的中心条件与极限环分支问题。

Physical and chemical performance indications such as the ignition point, self-ignition point, flash point, explosion limit, toxicity, etc.

原料、中间产品、最终产品或者储存的危险化学品的燃点、自燃点、闪点、爆炸极限、毒性等理化性能指标

Unlike the conventional indirect method, it can directly implement the generator field and armature current limits accurately, thereby assuring power flow convergence and voltage collapse point identification during tracing the PV curve when generator limits constraints are considered. The critical limit constraint equation is introduced in the corrective stage of the continuation method as the additional equation to solve the limit induced bifurcation point accurately.

给出新的发电机电流极限约束的直接处理算法，解决了计及发电机电流约束时，潮流难于收敛和不易精确求出电压崩溃点的问题；对不易精确求得的极限诱导分岔点，通过在连续潮流法的校正步骤中将关键的极限约束方程作为附加方程来快速而精确地求解。

Point to successive two days appear steep fall, shanghai points to drop for a time approach 5000 bits of col, two city do much power to continue to drop, those who drop from Zhou San occupy about 7 Chengshangsheng arrives to be controlled most probably; And two city clinch a deal 267.2 billion yuan, continue to the limit of one's capacity 7 percent, point to appear to drop urgently continuously of to the limit of one's capacity bad go situation, have 21 drop more than 8%, part a brunt capital is more apparent from field evidence.

股指连续两天出现暴跌，沪指一度下跌逼近5000点关口，两市做多动力继续减退，下跌的个股从周三的约占七成上升到八成左右；而两市成交2672亿元，继续放量7个百分点，股指呈现连续急跌放量的不妙走势，有21只个股跌幅超过8%，部分个股主力资金离场迹象比较明显。

For protecting the switch spring against overloading, into the lever mechanism is integrated a buffer or shock absorber, which is elastically flexible above a limit force associated with the operating force of the switch spring in the switching point and below the limit force is substantially rigid.

为使开关弹簧免于过负荷，一减震器集成到杠杆机构上，该减震器在一与开关弹簧在开关点上的操作力大于限制力时是弹性挠性的，而小于该限制力时则是刚性的。

Touch relays in the limit switch Rams Head, and measuring the 电笔 into the fire point have to measure its output point eletroless, the limit switch damaged ended no signal voltage circuits to post.

用手隔绝不张力继电器洋限位不开关的撞头，并用电笔测其进火不面有电，测其不不不不不不不输入不面无电，外明该限位不开关败坏，由此导致了不克不及不收回暗记电压使后级电路处事的障碍。

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。