不变化

The main content consists of three parts:(1) analyzing the structural dynamic changing rule considering SSI effect;(2) analyzing the earthquake response of traditional non-shake -isolate frameworks before or after considering SSI effect, and then summarizing the rules that how factors such as base-soil elastic modulus and damping ratio effect structural horizontal deflection, displacement between floors and girder-end moment;(3) analyzing the earthquake response of shake-isolate frameworks considering SSI effect or not, indicating the changes after considering SSI effect and the performance of rubber shake-isolate pad.

本文采用通用有限元程序ANSYS，对在7度多遇地震时El Centro波作用下框架的地震响应进行了分析，主要内容分为三部分：（1）分析了考虑SSI效应后结构的动力特性变化规律；（2）对传统非隔震框架结构考虑SSI效应前后的地震响应进行了分析，总结出地基土弹性模量、体系阻尼比等因素对结构各层水平位移、层间位移以及梁端弯矩的影响规律；（3）对考虑与不考虑SSI效应的基础隔震结构的地震响应进行了分析，指出了考虑SSI效应后基础隔震结构地震响应的变化规律和隔震效果。

The article researched new type thyristor trigger that adapts the frequency of input power automatically, then analyzed the designing ways and process of frequency-tracked trigger in detail, yet validated capability of trigger through experiment and actual appliance in project, we also build up the fault-diagnosed and disposal cell of hypogyny machine with SIMATIC S7-200 PLC, besides, programmed and debugged to realize various monitor and diagnose; more, smart design make protection function more perfect and action more sensitive, so it can realize perfect swift and reliable protection under fault condition.

本文重点研究了以频压变换技术为核心的新型频率跟踪触发器，详细分析了频率跟踪触发器的设计思路和设计过程，实现了在同一移相控制电压下，当同步电压频率大范围变化时触发器输出触发脉冲的电角度保持不变的目的，满足了项目对同步电压频率变化时晶闸管准确触发的要求；并通过实验和工程实际应用验证了触发器的性能。设计了基于SIMATIC S7-200 PLC软硬件的故障诊断系统并调试了各项监控、诊断功能；实现故障条件下准确、迅速及可靠的保护。

The problem with ice packs is they won't conform to the shape of the injured body part.

冰袋有个缺点就是不会随着伤处的形状变化而变化。

Therefore author think that corporations should make persistent change though it has outstanding and in favorable environment. Fist, Built up changing is the only immovability in mind, convey the thought to your staffs all the time because they will hard to give up bad customs and culture when they have acquired to it. Second, constant communicating. You should know what your customers think, concern the change of market, keep market feeling, make these changes to be corporation developing power. At last, you should listen to your staffs carefully when they have opinions, deal with their opinions carefully, to make these to be the chance to make innovation.

因此，笔者认为，在企业业绩很好，市场环境也非常有利的环境下，企业一定要进行持续的变革，首先必须是思想上的，必须要树立"变才是唯一不变"的思想，要始终传达这样的理念给全体员工，一旦懈怠下来，可能就会落后，养成不良的文化和习惯，是非常难以改掉的；其次，一定要加强沟通，不断聆听客户的心声，关注市场变化，保持对市场的敏感性，把这样的变化作为变革的动力；再者，一定要耐心聆听员工意见，认真处理这些意见，把这样的意见作为变革的契机。

We also find two species can coexist only when taking the medium values in some range of parameter,if it is too large or too small only one population can exist or none of them can .

其它的参数不变，而只变化某一个参数的取值，且这一取值变化符合这一参数划分区间，定态会经历这一区间内的多种状态，且会出现临界点，普通渗流与定向渗流类相互转化，且出现两个临界点，两次相转变。

The 21st_century morality education in colleges and universities faces tests of social transformation and students' changes and takes on symptoms of inadaptability.

走进21世纪的高校德育，面临着社会变革与学生变化两方面的考验，并在这些变化面前呈现不适应症。

In the process of establishing a new software, change is always ineluctable.

在计算机软件编制的过程中，变化是不可避免的，变化使得共同工作在某一项目中的软件工程师增加了彼此之间的不了解。

Based on the results of water quality (physical and chemical factors: water temperature, salinity, pH, DO, DIN, PO4-P, COD, and biomarker-indicated: total bacteria and Coliforms) determining from the 4 pools and infall, outfall of the Xishan Island aquaculture pond, the variation characteristics of water quality in infall, outfall of pond and its reasons were analysised and discussed.

结果表明：养殖场和进、排口水体温度、盐度变化不明显，pH下降与养殖周期有关；营养盐含量增加，在不同养殖种类、养殖周期和养殖饲料系数变化不同；受消毒杀菌等措施影响下细菌总数与大肠杆菌总数明显减小，而养殖周期长的池塘，细菌总数仍增加，大肠杆菌总数减少幅度变小。

It is indicated that the damping of the alloy is induced by phase interface slipping or grain boundary viscous sliding, the infinitesimal plastic deformation which is caused by the difference of elastic modules and heat expansion coefficients between phases of the alloy.

结果表明： ZA27-4%Si合金阻尼随频率增大而减小，随温度升高而增大，阻尼不随应变振幅的变化而变化； ZA27-4%Si合金室温阻尼为5.83×10-3，与ZA27合金阻尼相当； ZA27-4%Si合金的阻尼是由合金内部的晶界和相界面滑动、位错振动以及各相的热膨胀系数和弹性模量间差造成的微塑性变形共同造成的。

Fuzzy logic control, as a newly automatic control strategy, has been applied in industrial occasion, has insensitiveness and fast response to controlled process.

由于静压储能传动系统工作时系统结构和系数都随着负载工况的变化而变化，采用常规的基于被控对象精确数学模型的控制策略不易或不能有效地完成对被控对象的调节。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。