查询词典 Pi

This is a story about the son of a zookeeper, Pi, who was trapped on a lifeboat with a Bengal Tiger for 227 days.

是关於动物管理员的儿子， Pi，於沉船意外后跟一只老虎同困在一只小小的救生船上共度227 日的故事。

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。

In accordance with the functions of analytical solution and numerical solution for solving algebraical equation group,a design approach was introduced to conduct the pole placement of PI and PID controllers for first and second order controlled models using the symbolic operation.

利用符号运算，针对代数方程组求解的解析解功能和数值解功能，提出了1种对1阶被控对象和2阶被控对象模型进行PI控制器和PID控制器极点配置的设计方法，给出了相应控制器结构参数的解析解，并在算例中进行了数值仿真验证。

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%。

In this paper, Attacus ricini nuclear polyhedrosis virus was studied. The molecular weight and pi of polyhedrin and structural polypeptides were determined by vertical slab SDS-PAGE and thin-layer isoelectrofocusing electrophoresis. The restriction pattern of ArNPV DNA was assayed by 5 restriction endonucleases.

本文较为系统的研究了蓖麻蚕核型多角体病毒(Attacus ricini nuclear polyhedrosis virus，简称ArNPV)形态特征和生化特性，并预测了多角体蛋白的二级结构，为开发利用蓖麻蚕核型多角体病毒这一生物资源提供了理论参考。

An important part of this study was to deal with a avirulence gene mutant, MS220, which was obtained from the pool of transformants generated by SacⅠ mediated transformation and changed its avirulence into virulence on rice cultivar Aichiasahi (carrying resistance gene Pi-a).

本研究的一个重要组成部分是作者对从SacⅠ介导的转化群体中筛选得到一株对水稻品种爱知旭特异性发生改变了的突变体MS220进行分子遗传学分析。

And aim at note: CTP servers only accept the following file formats: PDF, PostScript Levell, 2and3; EPS; DCS and DCS2 (both single and multi-five versions); TIFF/IT-PI; CT/LW Brisque; 1-bit Tiff with 256Tiff.

夺纲：CTP服务器仅剥夺以上文件方式： PDF； PostScript Levell，2and3； EPS； DCS and DCS2(both single and multi-five versions)； TIFF/IT-PI； Brisque CT/LW； 256Tiff跟1位Tiff。

Methods Density gradient centrifugalization combined with adherence method were used to segregate and cultivate rat MSCs. MSCs cultivated to the 3 rd passage were characterized using flow cytometry technique. TGF-β1 with 1, 2 and 5 μg/L were pretreated on MSCs for 8 h, then serum and oxygen deprivation were used to cause analogous ischemia of MSCs in vitro. AnnexinV/PI flow cytometry technique was used to evaluate apoptosis and survival of MSCs.

采用密度梯度离心结合贴壁法分离、培养大鼠MSCs，对培养第3代的MSCs进行鉴定；用1、2、5μg/L的TGF-β1分别预处理细胞8 h，然后用血清剥夺和低氧处理建立MSCs体外模拟缺血性损伤模型，通过流式细胞术评价MSCs的凋亡及存活情况；用Western blot方法检测2μg/L的TGF-β1对Akt和p-Akt表达的影响。

Co-expression of HIF-1α and GST-Pi is a object index for judging differentiation and chemoresistance of bladder cancer.

HIF-1α在膀胱癌中高表达可能与缺氧有关，HIF-1α和GST-Pi协同表达是判定膀胱癌恶性程度及多药耐药程度的客观指标。

The statistical analysis of this large set of mutations has led us to propose a diagnostic strategy that should help with the molecular work-up of optic neuropathies.

这一大系列基因突变的统计学分析引导我们提出一个诊断策略，可以帮助我们对视神经病变进行分子学的诊断检查。

The results show that the pipe grouting changes the mechanical parameters of surrounding rocks to achieve the security of engineering objectives by reinforcing surrounding rocks and bolcking the water.

研究表明：小导管注浆一方面改变了围岩的力学参数，另一方面利用浆液的固结特性可以实现堵水和加固围岩的工程目标，使隧道在开挖过程中的安全得到保障。