根出的

In this paper we contribute the general integral formula of second order linear differential equation with constant coefficients by means of decreasing order So we can integrate directly to solve this kind differential equation .

本文通过降阶法给出了求二阶常系数线性微分方程通解的方法，并根据特征根的不同情形给出了具体的通解公式，即可通过积分直接求微分方程的通解。

The representation of sequences is very helpful for the research of their linear complexity,so this paper we first research trace representation of periodic sequences,and the trace representation of a New Generalized Cyclotomic Sequence of order two of length pq is given,then for 2~mp~n period binary sequences,where p is an odd prime and 2 is a primitive root modulo p~2,we present a relation-ship between the linear complexity and the minimum value k for which the k-error linear complexity is strictly less than the linear complexity and have the upper bound and lower bound of the value k, finally we discuss the k-error linear complexity of legendre sequences,also have the upper bound and lower bound of the value k,and discusses the situation where the linear complexity drop again for some Legendre sequences.

序列的表达形式对于其线性复杂度的研究是十分有帮助的，本文我们首先研究的是周期序列的迹表示，给出了2阶pq长度的扩展分圆序列的迹表示，然后讨论了周期为2~mp~n(m≥2)序列的线性复杂度与使得线性复杂度变小的最小的k值的关系，给出了k值的上界和下界，这里p为奇素数，2是模p~2的本原根，并通过例子讨论了其线性复杂度的稳定性，最后对Legendre序列k-错线性复杂度进行了分析，也给出了k值的上界和下界，并对某些Legendre序列讨论了线性复杂度再次下降的情况。

According to the superposition principle of electric circuits, the post-fault power network is equivalent to the superposition of network in normal state and that composed by fault components; then taking single-phase system for example, the fault distance and asynchronous time are taken as unknown numbers and the fault location equations for normal voltage and current phasors as well as fault components are established; and then the analytical expression for fault distance is deduced, in addition the recognition method of false root is given.

该算法根据电路叠加原理，将故障后的网络等效为正常状态网络和故障分量网络的叠加，然后以单相系统为例，以故障距离和非同步时间作为未知数，对正常电流电压相量和故障分量分别建立测距方程组，推导出故障距离的解析表达式，并给出了伪根的识别方法。

The overglaze decorating method was used for the board and the fine and delicate painting style and artistic writing skill were applied to outline peony, Azalea, Camellia, Chinese Wisteria, Narcissus, Pine, Bamboo, Plum blossoms, Flying Swallow etc.

作品采用釉上彩的装饰方法，运用兼工带写的艺术手笔，描画出牡丹、杜鹃、茶花、紫藤、水仙、松、竹、梅、飞燕等各色花鸟，根叶相连，花团锦簇，相互呼应，勾勒出浩荡春光下一幅生机勃勃、欣欣向荣的繁荣景象。

By analyzing the distribution of the roots of the characteristic equation according to Rouche theorem, the stability condition of this dynamical system is investigated and Hopf bifurcations are demonstrated. The bifurcation graph can be obtained and some simulation examples are shown.

利用儒歇定理及其推论分析了该动力系统特征方程根的分布情况，进而得到该系统解析解稳定和Hopf分支存在的条件，画出了分支图，给出相应的数值例子。

The factors include the retarded time of torpedo engine starting, torpedo velocity at tube outlet, confined elevator angle and ship rolling angle. Similarity variables were defined for the four factors and values of the variables were determined through combination of experimental data and simulation results.

在舰艇鱼雷发射初期弹道建模与仿真研究中，重点研究鱼雷发动机启动延迟时间、鱼雷出管速度、管制舵角、舰艇横摇角对初期弹道的影响，将该四项因素作为相似元，再根据实航试验数据的袋深与仿真计算结果的袋深求出相似元的值。

His comical role in Advent Children includes being locked out while Cloud and Rufus have an important talk, bringing out his weapon and accidentally hitting Rude in the head, being knocked back several hundred feet by Yazoo and landing on Rude, climbing a building to save Rufus and using Rude's head as support, stepping on and crushing Rude's trademark sunglasses, having a child stick his fingers up his nose while rescuing him from Bahamut SIN, and apologizing to Loz and Yazoo for insulting Jenova before realizing what he said.

来到孩子的他好笑的角色包括被锁出当云的时候而且 Rufus 有重要的谈话，出版他的武器和偶然地碰撞粗鲁无礼的在头中，被 Yazoo 和登陆敲击背面一些百脚在粗鲁无礼的之上，攀登一楝建筑物解救 Rufus 而且使用粗鲁无礼的头如支持，走在和之上打破得支离破碎的粗鲁无礼的商标太阳眼镜，有他的手指提高他的鼻子一根孩子根当从 Bahamut 罪中救起他的时候，而且为侮辱的在他所说的前 Jenova 向 Loz 和 Yazoo 道歉。

Third, volatilizable parts from Hainan Rauvolfia were obtained through water vapor distillation. They were analyzed by GC/MS. The resuts showed that about 10 compounds in the root essential oil were extracted and 9 of them were identified. Fatty acids and phenol ramification are the main types of the compounds.

用水蒸气蒸馏法获得了萝芙木中的易挥发组分，对其进行了GC/MS分析，分析结果表明，萝芙木根挥发油分离出10个峰，鉴定出9种化合物，其主要成分为9-十八烷酸、十六酸，棕榈酸、9，12-十八烷二酸、1H－酚[2，1-b] 喃-1-酮，分别占挥发油总量的25.66%、19.34%、18.12%、17.23%，四者占其总量的80.35%。

But a Broom stick, perhaps you'll say, is an Emblem of a Tree standing on i ts Head; and pray what is Man, but a Topsyturvy Creature, his Animal Faculties p erpetually a Cock Horse and Rational; His Head where his Heels should be; grov eling on the Earth, and yet with all his Faults, he sets up to be an universal R eformer and Corrector of Abuses, a Remover of Grievances, rakes into every Slut' s Comer of Nature, bringing hidden Corruptions to the Light, and raises a mighty Dust where there was none before, sharing deeply all the while, in the very sam e Pollutions he pretends to sweep away: His last Days are spent in Slavery to Wo men, and generally the least deserving;'till worn to the Stumps, like his Broth er Bezom, he's either kickt out of Doors, or made use of to kindle Flames, for o thers to warm Themselves by.

或许你会说，一根扫帚把不过象征着一棵头冲下的树而已，那么请问：人又是什么？不也是一个颠倒的动物吗？他的兽性总是骑在理性的背上，他的头去了该脚应去的地方，总是在土里趴着。可是尽管有这么多毛病，他还自命为天下的改革家、除弊者、伸冤者，把手伸进人世间每个藏污纳垢的角落，扫出来一大堆从未暴露过的脏物，把原来干净的地方弄得尘土满天，非但没扫走脏物，还把自己弄得满身污垢。到了晚年，他又变成女人的奴隶，通常是一些最不堪的女人，直到他被折磨得只剩下一根枯枝，于是他也像他的扫帚老弟一样，或者是被扔出门外，或者是被拿来生火，用于温暖别人了。

It does not require multipliers and Three-Phase voltage sensors, which are used in many other control approaches.

接下来本文基于特勒根定理推导出了该整流器的交流小信号模型，并给出电路参数的设计方法。

Fancy gold-plated dangling earrings with facetted White Opal crystals.

花式镀金悬垂耳环与facetted白欧泊水晶。

This essay chooses the study aim from biology teachers in middle school in Shi Jiazhuang which tells us that most of the middle school biology teachers in Shi Jiazhuang have the"burnout", lower successfulness, individualize.

本文选取石家庄市初中生物教师作为研究对象，运用问卷调查的方法对石家庄市初中生物教师职业倦怠的现状进行调查，调查结果发现，石家庄市初中生物教师这一群体普遍存在职业倦怠，情感枯竭程度偏高，成就感偏低，去个性化程度最为严重。