查询词典 pi

The mid-night, two villains have run vivaciously, the preparation starts to work immediately, but couldn't they how also find cut out good Pi Liao, actually had discovered two sets of attractive small clothes, they are happy, are happy dance with joy.

午夜时分，两个小人儿蹦蹦跳跳地跑了进来，准备马上开始干活儿，可他们怎么也找不到裁剪好的皮料，却发现了两套漂亮的小衣服，他们喜形于色，高兴得手舞足蹈起来。

The Black-faced Spoonbill is a large white wading bird with a distinctively shaped beak - looking like a spoon, or a pi pa.

黑脸琵鹭是大型涉禽，身上长满白色羽饰，鸟喙形状独特，成匙状，又似琵琶。

Focusing on some disadvantages in standard BP algorithm, such as low convergence rate, easily falling into local minimum point and weak global search capability, Genetic algorithm is used to optimal the connection weight of BP Algorithm in this paper, and construct a GA-BP algorithm of evolutionary neural network, and the algorithm is applied to the control of BLDCM speed adjusting system.

针对标准BP算法存在全局搜索能力弱和易陷入局部极小点等缺点，本文将遗传算法与BP神经网络相结合，构造了一种新的进化神经网络GA-BP算法，并将该算法应用于无刷直流电机调速系统的控制，仿真结果表明，与传统的PI控制系统相比，该算法得出的电机控制曲线几乎无超调，与基于BP算法的速度控制系统相比较，具有收敛速度快、不易陷入局部极小的优点。

In a word, the Fuzzy-PI controlling method can be used in the project which is reasonable and advanced.

总的看来，具有一定的先进性和合理性，可应用于工程实践。

If a conditional probability equals zero, e.g.

如果一个非条件概率为零，例如 Pi = 0 i = 1，2，。。。

An algorithm based on operation times (T_0) of zero voltage space vector is presented. The d-axis current can be derived from the PI controller, whose inputs are T_0 and one constant T_0~*.

与普通弱磁方法相比，该方法有效地避免了电机参数变化对控制精度的影响，在加快动态响应速度的同时，降低定子电流的幅值。

An algorithm based on operation times (T_0) of zero voltage space vector is presented. The d-axis current can be derived from the PI controll er, whose inputs are T_0 and one constant T_0*.

与普通弱磁方法相比，该方法有效地避免了电机参数变化对控制精度的影响，在加快动态响应速度的同时，降低定子电流的幅值。

The value of pi Zu Chongzhi had calculated is more than 1000 years ahead of the western mathematics.

祖冲之计算得出的圆周率，外国数学家获得同样结果，已是一千多年以后的事了。

As mentioned above, Zu Chongzhi's main contribution to math is the computation of pi.

如上所述，祖冲之的主要贡献是数学计算的贡献。

The system adopt new materials and new technology,including such equipment as the following:a stainless and carbon steel-fabricated converter and dice and doughnut-type gas heat exchanger with big-orifice baffles and wavy pipes,anodically protected stainless steel acid coolers and pipes,a heat-pi...

该系统在设计中积极采用新材料、新技术，成功地应用了不锈钢和碳钢相结合转化器、阳极保护不锈钢酸冷却器及管道、热管省煤器、新型大孔板波形管碟环式换热器、DCS控制系统等。2年多的生产运行情况表明，装置运行可靠，技术指标先进，生产控制指标达到或好于设计值，总转化率达99.87%，吸收率达99.99%。

I will endeavour to find you some assistance.

我尽力帮你找人帮忙。

At first I only know bruck is the idol of American younglings, afterwards I returned back to Taiwan ,even in Beijing last year ,I saw her poster everywhere, I was so surprised at her charm.

起初我只晓得布鲁克雷德丝是美国少男少女崇拜的偶像，后来回台湾，甚至去年在北京，居然也四处看见她的海报，才惊讶她的魅力之大。