查询词典 R.R.

If ris also irreducible in Z_nand f~n~κ≡fmodn,r(xfor all f∈Z_nthen we call n a Carmichael number of orderκmodulo r.Denote the set of all such numbers by C_κ,r(x.Define C_κ=∪_r(xC_κ,r(x,where rpasses through all monic irreducible polynomials over Z of degreeκ.We call elements of the set C_κCarmichael numbers of orderκ.ZHU and SUN[Journal of Sichuan University,42;1(2005), 47-51]first gave a necessary condition for Carmichael numbers of order 3.Then they gave a sufficient condition for Carmichael numbers of order 3,but did not find any such numbers less than 10~8 satisfying the sufficient condition.At last,they asked three questions;1.is the necessary condition also sufficient?

f∈Z_n，就称n是模r的κ阶Carmichael数，用C_κ，r(x表示所有这种数的集合，定义C_κ=∪_r(xC_κ，r(x，这里r跑遍Z中所有κ次首一不可约多项式，C_κ里面的元素就称为κ阶Carmichael数，C_κ称为κ阶Carmichael数集，朱文余和孙琦[四川大学学报，42；1(2005)，47-51]首先给出了3阶Carmichael数的一个必要条件；然后又给出了这种数的一个充分条件，并发现10~8内没有满足此充分条件的这种数；最后他们提出三个问题；一、问必要条件是否也是充分的？

The following statements are proved:. A is equivalent to a diagonal matrix if and only if A is similar to a diagonal matrix.. If R is an APT ring, then A can be uniquely diagonalized as diag{e1,..., en} and ei divides ei+1.. R is an APT ring if and only if R/I is an APT ring, where I is a nilpotent ideal of R.

本文证明了以下结果：A相抵于一对角阵当且仅当A相似于一对角阵；若R是一APT环，则A在相似变换之下可唯一地化为对角形diag{e1，…，en｝，这里ei整除ei+1；R是APT环当且仅当R/I是APT环，这里I是环R的一幂零理想。

A process for reducing nitryl with unstable guanyl on para-position of benzene ring into azyl features that active metal reacts on organic acid and solvent at ordinary temp. and pressure to reduce N-(2 or 3-M, 5 or 6-M',4-nitrophenyl)-N',N'-dimethyl acetamidine into N-(2 or 3-m, 5 or 6-M', 4-aminophenyl)-N',N'-dimethyl acetamidine, where M=H,-R,-OR,-COOR (R=H, C1-C6); and M'=H,-R,-OR,-COOR (R=H, C1-C6). Its advantages include reduced by-reaction and high reducting rate up to 80%-95%.

本发明是将苯环上对位带有不稳定脒基的硝基还原为氨基的方法，采用活泼金属，如：锌或锡，与有机酸和适当的溶剂，在常温、常压下发生反应，将N－（2或3－M，5或6－M＇，4－硝基苯基）－N＇，N＇－二甲基乙脒还原为N－（2或3－M，5或6－M＇，4－氨基苯基）－N＇，N＇－二甲基乙脒，其中M＝H，－R，－OR，－COOR（R＝H，C1－C6），M＇＝H，－R，－OR，－COOR（R＝H，C1－C6），减少了副反应，使还原收率达到80％以上，最高可达95％以上，更适用于工业化生产。

Xuzhou Pierte Pipe System, is an earlier production of PP-R pipeline series of large private enterprises, since its creation has been committed to green fields of engineering research and development, the company adhering to the "pipeline Peart, green passage" of the concept 2001, namely the introduction of German equipment and technology imported raw materials production and sales professional in line with international standards DIN8077, DIN8078 for PP-R pipe, fittings, installation of equipment such as a full set of pipeline products, the company has main products: PP-R pipe fittings, GF PIPING, nano-antibacterial PP-R pipe pipe fittings, PE-RT heating pipe, PVC-U drainage pipes and other series.

苏州皮尔特管业，是国内较早生产PP-R管道系列产品的大型民营企业，自创建以来一直致力于绿色环保工程领域的研究与发展，公司秉承"皮尔特管道，绿色通道"这一理念， 2001年即引进德国进口原料设备及工艺专业生产和销售符合国际标准DIN8077，DIN8078的PP-R管材、管件、安装设备等全套管道产品，公司主要产品有：PP-R管材管件、玻纤增强管材管件、纳米抗菌PP-R管材管件、PE-RT采暖管、PVC-U排水管等系列。

Xuzhou Pierte Pipe System, is an earlier production of PP-R pipeline series of large private enterprises, since its creation has been committed to green fields of engineering research and development, the company adhering to the "pipeline Peart, green passage" of the concept 2001, namely the introduction of German equipment and technology imported raw materials production and sales professional in line with international standards DIN8077, DIN8078 for PP-R pipe, fittings, installation of equipment such as a full set of pipeline products, the company has main products: PP-R pipe fittings, GF PIPING, nano-antibacterial PP-R pipe pipe fittings, PE -RT heating pipe, PVC-U drainage pipes and other series.

不用担心记不住初始密码，该信息已经发往您的邮箱，请注意查收。不用担心记不住初始密码，该信息已经发往您的邮箱，请注意查收。苏州皮尔特管业，是国内较早生产PP-R 管道系列产品的大型民营企业，自创建以来一直致力于绿色环保工程领域的研究与发展，公司秉承"皮尔特管道，绿色通道"这一理念， 2001年即引进德国进口原料设备及工艺专业生产和销售符合国际标准DIN8077，DIN8078的PP-R管材、管件、安装设备等全套管道产品，公司主要产品有：PP-R管材管件、玻纤增强管材管件、纳米抗菌PP-R管材管件、 PE -RT采暖管、PVC-U排水管等系列。

Xuzhou Pierte Pipe System, is an earlier production of PP-R pipeline series of large private enterprises, since its creation has been committed to green fields of engineering research and development, the company adhering to the 'pipeline Peart, green passage' of the concept 2001, namely the introduction of German equipment and technology imported raw materials production and sales professional in line with international standards DIN8077, DIN8078 for PP-R pipe, fittings, installation of equipment such as a full set of pipeline products, the company has main products: PP-R pipe fittings, GF PIPING, nano-antibacterial PP-R pipe pipe fittings, PE-RT heating pipe, PVC-U drainage pipes and other series.

经营模式：经销，代理，特许，合作发展模式：经销，区域代理，区域开发，二级特许苏州皮尔特管业，是国内较早生产PP-R管道系列产品的大型民营企业，自创建以来一直致力于绿色环保工程领域的研究与发展，公司秉承"皮尔特管道，绿色通道"这一理念， 2001年即引进德国进口原料设备及工艺专业生产和销售符合国际标准DIN8077，DIN8078的PP-R管材、管件、安装设备等全套管道产品，公司主要产品有：PP-R管材管件、玻纤增强管材管件、纳米抗菌PP-R管材管件、PE-RT采暖管、PVC-U排水管等系列。

Finally, it shows that R is von Neumann regular ring if and only if every right .R-module is right pm-injective if and only if every right principal right ideal of R is right pm-injective if and only if every essential right ideal of R is right pm-injective. Furthermore, some good properties are obtained.

最后，得到R是von Neumann正则环当且仅当每个右R-模是右pm-内射当且仅当R的每个主右理想是右pm-内射当且仅当R的每个本质右理想是右pm-内射，以及其他诸多好的性质。

The induced changes in log mesopic contrast sensitivity showed significant negative correlation with the changes in third-order (r =-0.490, P =.0013 without glare; r =-0.362, P =.0177 with glare; Spearman rank correlation coefficient) and fourth-order root mean square (r =-0.586, P =.0001 and r =-0.306, P =.0450, respectively).

中间视力对比敏感度log值的变化与三阶像差(r =-0.490， P =。0013 无眩光； r =-0.362， P =。0177 ，有眩光； Spearman 等级相关系数)和四阶像差(r =-0.586， P =。0001无眩光；； r =-0.306， P =。0450有眩光，)的均方根呈显著负相关。

Fruit yields, weight of single fruit, per fruit pulp weight, fruit edible ratio, water content of sarcocarp were all increased with the increase of SWC and reached the maximum at SWC75. Soluble brix, soluble suger and titratable acid of fruit had notable or significantly notable negative-linear relations with SWC (R~2 = 0.880 7*; R~2 = 0.717 7* and R~2=0.965 1**) while pH of fruit was increased as SWC did. Brix-acid ratio of fruit was increased linearly with the increase of SWC (R~2=0.908 6*, n=50) and reached the maximum at SWC75. Suger-acid ratio also increased with SWC.

在SWC≤75%时，柑橘产量，单果重，单果果肉重、果实可食率、果肉含水量等随SWC增加而显著增加，在75%时各指标值最高；果实可溶性固形物、可溶性糖和可滴定酸含量分别与SWC呈显著或极显著线性负相关，相关系数分别为R~2=0.880 7~*(n：50)、R~2=0.717 7~*(n=50)和R~2=0.965 1~n=50果实pH值则呈相反趋势，柑橘果实固酸比和糖酸比随SWC的增加而显著增加，果实固酸比与SWC呈显著线性相关(R~2=0.908 6~*，n=50，糖酸比在SWC=75%时达到最大值。

When u lost the R'n'R password, simply uninstall R'n'R and reinstall it.

当u失去了r'n'r密码，只需卸载r'n'r并重新安装它。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。