查询词典 Pi

Introduce and analysed lukewarm the characteristic that controls a system, gave out then the design that gray forecasts ambiguous controller, through Matlab emulation experiment makes clear, when systematic parameter produces change, use this method and photograph of effect of groovy PI control to compare, having better control precision and dynamic character, to actual constant temperature control has certain direct sense.

介绍和分析了温控系统的特征，接着给出了灰色猜测模糊控制器的设计，通过Matlab仿真试验表明，在系统参数发生变化的时候，采用此方法和常规PI控制效果相比，具有着更好的控制精度和动态特性，对实际恒温控制具有一定的指导意义。

In the Eastern Han dynasty, the North a large number of writers, such as Cao Cao , Cao Pi, Cao Zhi, Wang Can, Liu Zhen, Chen Lin, Xu dry, Cai Wenji, Handan sun and so on, they gathered in Dongjak Taiwan to express their own straight-minded, generous-permanent gas, desire to express the ambition to perform meritorious deeds; Min time Mourning arbitrary, reflecting the social reality and people's tragic life, set off in the history of our poetry writers created the first high tide.han xian di at a time because of their age Jian'an, so future generations as Jian'an literature.

东汉末年，北方一大批文学家，如曹操、曹丕、曹植、王粲、刘桢、陈琳、徐干、蔡文姬、邯郸淳等，他们聚集在铜雀台，用自己的笔直抒胸襟，慷慨任气，抒发渴望建功立业的雄心壮志；闵时悼乱，反映社会现实和人民群众的悲惨生活，掀起了我国诗歌史上文人创作的第一个高潮。

To understand the relationships between the activities of superoxide dismutases, catalase, peroxidase and resistance of melon to gummy stem blight, dynamic changes of activities of SOD, CAT and POD in resistant accession PI 196477 and susceptible accession Lvbaoshi were analyzed after inoculation by Didymella bryoniae.

为了明确甜瓜蔓枯病抗性与SOD、CAT和POD活性变化的关系，采用甜瓜蔓枯病菌孢子悬浮液对抗病材料PI 196477和感病材料绿宝石进行接种，并于接种后测定叶片内SOD、CAT和POD的活性变化。

The system uses PID controller and fuzzy controller to design automatic control loops, a study of fuzzy three-element feed-water control system for a CFB municipal waste incinerator is introduced. The incinerator is faced with problems such as large-scale fluctuation of furnace heat load and low regulation resolution of main control feed-water valve. The fuzzy logic control system is applied to modulate PI control parameters according to steam drum water level to fit fluctuated heat load, the inner and outer control loops are realized in an asynchronous way to effectively decrease regulation time and improve regulation precision.

针对垃圾炉炉膛负荷波动较大，同时给水调节阀门执行机构的调节精度较低的现状，在传统三冲量串级汽包水位控制方式的基础上，采用模糊控制策略对内、外串级回路的PI控制参数进行分区域调整，强调了PI参数在被控参量处于不同范围时的分离作用，同时内、外控制回路采用异步控制方式，浙江大学硕士学位论文从而有效地减小了被控参量的调节时间，提高调节精度，使水位波动控制在△为士12~范围内。

In our self-Oscillation drive system,the stable error of the oscillation amplitude is eliminated by the PI controller .

在该闭环驱动系统中，通过引入 PI控制器消除了振动幅度控制的稳态误差。

But now only the Pi-pa in my arms is accompanying me to the distant desert area, while the song-singing and dancing activities in the palace will no longer involve me!

而现在却只有怀中的琵琶伴我走向那蛮荒的漠北，长安城中的快乐的歌舞中再也不会有我的身影了！

PI: private investigator, also known as a soft-shoe

私家侦探：私人秘密调查者，也叫做&soft-shoe&

LDH in culture fluid, SOD, XOD, free calcium in L-6TG cell and mitochchondral respiration were evaluated in each group; apoptosis was detected by flow cytometer with PI staining method and agarose gel electrophoresis; the immuneohistochemical method was used to determine the expression of bcl-2 and Caspase-3 ; the morphoiogic changes were observed with microscope.

将培养的L-6TG大鼠肌母细胞随机分为3组：①正常对照组，②缺血再灌注组（1R组），③缺血预处理组，观测了培养上清中LDH、细胞内SOD、XOD、Ca(上标 2+)含量的变化；采用MTT法检测线粒体的功能；利用流式细胞仪和细胞DNA电泳结果检测细胞凋亡情况；采用免疫组织化学的方法检测bcl-2及Caspase-3的蛋白表达情况，结合自动图像分析系统对其结果进行定量分析；在光镜下观察细胞的形态学改变。

In this system, taking the single- chip computer89C51 as the core part and the small-type of DC motor as the control object.a double closed-loop PI control is implemented.

本文介绍了一种基于单片机控制的PWM直流电机调速系统，系统以89C51单片机为核心，以小型直流电机为控制对象，实现双闭环PI控制。

In this system, taking the single- chip computer89C51 as the core part and the small-type of DC motor as the control object.a double closed-loop PI control is implemented.

摘要本文介绍了一种基于单片机控制的PWM直流电机调速系统，系统以89C51单片机为核心，以小型直流电机为控制对象，实现双闭环PI控制。

I had a lovely dog named PiPi, he was one of my best friends.

我曾经有过一只小狗，它的名字叫皮皮，它很善良，它是我最忠实的朋友。

Newly ovulated mouse oocytes were cultured in the CZB medium supplemented with different concentrations of pyruvate before treated for activation or assayed for MPF activity.

我们猜测卵母细胞在不含丙酮酸的条件下老化的更快，并且卵丘细胞可能通过消耗不含葡萄糖的CZB中的丙酮酸从而促进卵母细胞老化。