焦点

Cross hair or crosshair: Either of two fine strand s of wire crossed in the focus of the eyepiece of an optical instrument and used as a calibration or sighting reference.

"十字丝：呈十字形交叉于光学仪器的目镜焦点上的两根细丝之一，用于校准或瞄准参考。"

Derive some new conditions on existence of eight limit cycles for a cubic system.

刘一戎。一类高次奇点与无穷远点的中心焦点理论。

At the same time, the first 8 focus quantities, center conditions and center integral are given for a cubic system and a computational example of cubic systems with 10 saddle quantities presented for the first time.

同时给出了一类三次系统的前8个焦点量及中心条件和中心积分，首次给出了一个具10阶细鞍点的三次系统计算实例。

This paper studies a class of cubic system with planar polynomial.We use the qualitative theory of ordinary differential equations method of analysis, reached the following conclusions of four parts: First, we analyze the quality of all critical points of the system,and draw the conditions of existence of singular integrals for the system , in front based on the analysis, using Pioncare form series method to calculate the focal value of o(0,0). Finally, we also study the behavior of critical points at infinity.

中文摘要：本文研究了一类平面三次多项式系统，我们采用常微分方程的定性理论的分析方法，得出如下四个部分结论：第一部分，分析系统所有奇点的性态，并得出系统存在奇异积分直线的条件；在前面分析的基础上，用Pioncare形式级数法，计算出了系统在奇点o(0，0)的三个焦点量；最后，研究了系统无穷远奇点的性态。

What kind of talents should be cultivated is the core and focus of "running what kind of education".

培养什么样的人的问题是"办什么样的教育"的核心和焦点。

Jiexin Cuprum Gate Co., Ltd., under the leadership of President and General Manager, abides by the management concept of "Being Sincere with People and Being Scientific in Production", and gives a full play of Jiexin culture and values to provide quality, quick and satisfying services to broad customers for the objective of "customer satisfaction".

杰鑫铜门有限公司在其董事长，总经理的领导下，恪守"以诚待人，科学待物"的经营理念，彰显杰鑫企业文化及价值观念，以"顾客满意"为关注的焦点，愿为社会各界提供更高品质、更快捷、更舒心的服务。

Placing those pieces in a curio cabinet will be a nice tribute to your Grandmother and create an interesting focal point.

把它们放在古董台上，就是对你祖母最好的贡物，并创造一个有趣的焦点。

This is superimposed in front of the current page and the user must narrow their focus to the window only.

这是叠加在当前页的前面，用户必须将焦点缩小到窗口只。

As an interface of customer services, call center has become the focus of enterprises interest and developed at surprising speed in recent years.

在市场竞争愈演愈烈的时代，企业之间的竞争更加取决于服务的竞争，呼叫中心作为客户服务的窗口已成为企业关注的焦点，近年来在国内取得了非常迅速的发展。

This article utilizes the literature material law, the questionnaire survey procedure, the teaching cut-and-try method carries on the analysis to the middle school sports teaching, discovered the question includes: As a result of the birth control policy implementation, in the Wei County two middle-school students the only child increases day by day, the child becomes in the family the treasure, the elder dotes on has Canada, in addition the social life level unceasing enhancement, the child nutrition surplus situation remarkable increase, a student physique front year obviously drops, therefore the middle school physical education becomes everybody attention gradually the focal point, how very good physical education, how does cause the student to like on the physical education, how finally causes the physical education to become the student to grow the growth important curriculum, namely the physical education plays truly imparts knowledge and educates people in the school should get up nurtures the human, nurtures the body the vital role.

本文运用文献资料法，问卷调查法，教学实验法对中学体育教学进行剖析，发现的问题有：由于计划生育政策的实施，威县二中学生中独生子女的日益增多，孩子成为家中之宝，长辈宠爱有加，再加上社会生活水平的不断提高，孩子营养过剩的情况显著增加，学生体质较前些年明显下降，因此中学体育课逐渐成为大家关注的焦点，怎样上好体育课，怎么样使学生喜欢上体育课，最后怎样使体育课成为学生生长发育的重要课程，即体育课真正起到在学校教书育人中所应起到的育人、育身的重要作用。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。