整环

Both the stereocenters were established facilely and high selectively, and theα-pyrone andγ-pyrone rings were constructed easily with this strategy.

整条路线简洁高效，并且很方便和高选择性的构建手性中心以及γ和α-二氢吡喃酮环。

Let G be a finite group, ZG its integral group ring and Δ~n the nth power of the augmentation ideal Δ, denote Q_n=Δ~n/Δ~ n+1 the augmentation quotient group s of G.

对任意有限群G的整群环ZG，设Δn是ZG的n次增广理想，记Qn=Δn/Δn+1为G的增广商群。

Taking the idea of parameters self-correcting fuzzy control, intelligent fuzzy controller is designed in velocity loop.

采用模糊PI参数自整定控制的思想，在速度环上设计了智能模糊控制器。

The deterioration of these reactions at both ends and the middle of TM Ⅵ and the location of these amino acids at trisection of the helix wheel suggest their roles in maintaining the stability of conformation.

这些突变株在第六穿膜区的位置恰巧分布在两端与中间，且其在整各螺旋环柱的分布均分三区。

The indirect decompression mechanism of the pedicle screw open the fracture vertebral and intervertebral discs ,strain posterior longitudinal ligament and intervertebral discs annulus tibrosus ,and push the bone pieces in the vertebral canal ahead to reduct, this process is Ligamentotaxis ,It is function depends on the completement of posterior longitudinal ligament and intervertebral discs annulus tibrosus.

椎弓根螺钉间接减压机制是通过椎弓根螺钉撑开损伤部椎体与椎间盘，紧张后纵韧带与椎间盘纤维环，将凸入椎管的骨块推向前方而复位，称为韧带整复。

to overcome some disadvantages of low precision,slow dynamic response,unconvenience parameter adjust existing in high-power ultrasonic power supply,it applies intelligent control composed of 8089 microcontroller is proposed.the article introduces the modulation principle of spwm,the composition of high-power ultrasonic power system applying the single chip computer to realize the soft of phase lock loop,the mechanism of work and the software thought.it realizes the low loss,high power factor and the whole performance of the circuit is developed.

摘 要：针对目前大功率超声波电源采用模拟控制电路存在精度低、动态响应慢、参数整定不方便等缺点，采用单片机8089组成智能控制的超声波电源系统。提出了基于spwm技术的双闭环控制策略和应用单片机实现软锁相的工作原理和软件思想，使整个超声波电源实现了低损耗、高功率因数，优化了电路的整体性能。

to overcome some disadvantages of low precision,slow dynamic response,unconvenience parameter adjust existing in high-power ultrasonic power supply,it applies intelligent control composed of 8089 microcontroller is proposed.the article introduces the modulation principle of spwm,the composition of high-power ultrasonic power system applying the single chip computer to realize the soft of phase lock loop,the mechanism of work and the software thought.it realizes the low loss,high power factor and the whole performance of the circuit is developed.

寂寞网民何时&回家吃饭&？基于单片机8089的超声波电源控制技术的研究。裴玖玲屈百达□摘要：针对目前大功率超声波电源采用模拟控制电路存在精度低、动态响应慢、参数整定不方便等缺点，采用单片机8089组成智能控制的超声波电源系统。提出了基于spwm技术的双闭环控制策略和应用单片机实现软锁相的工作原理和软件思想，使整个超声波电源实现了低损耗、高功率因数，优化了电路的整体性能。

The closed-characteristic expression is proven to be of a A-class entire function and some related propositions are also given. Based on them a series of nathematic deviations are done, which brings an analytic expression between the controller parameters and the cost funtion as well as the restrictions on the optimization problem. In this way the original proposition is concretized for solving.

从系统的传递函数出发，首先证明系统闭环特征函数为A-类整函数的性质并给出其它有关定理，然后进行一系列数学推导，得出了控制器参数与目标函数间的解析关系式及优化的约束条件，由此产生参数优化的具体命题。

Labels have had to change their relationship with artists and lean on new partners, including the talent managers they often squabbled with in the past.

她在演唱会、音乐录像和过去的颁奖礼表演中曾戴着整副面具和行星环头饰。还曾把鸟窝样子的装饰品围在自己的头上。

Summarize: XGN15-12 is a new metal-enclosed switchgear which whole air-insulated is assembly composed with SF6 loading switch as the main switch ,suitable for auto-electric-power distribution , both compacted and extensible metal-enclosed switch equipments.

XGN15-12型户内交流高压六氟化硫环网开关设备是新一代以六氟化硫负荷开关作为主开关而整柜采用空气绝缘的，适用于配电自动化的、既紧凑又可扩充的金属封闭开关设备。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。