ring domain

Introduce the new concepts of weak domain, weak principal ideal ring and weak Euclidean ring.

引进了弱整环 、 弱主理想环、弱欧氏环等概念,研究了环的直和保持的一些性质.

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The method of counting for circular ring objects in frequency domain is proposed.

研究了用频域法实现圆环形目标物计数的方法.

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A time domain display method of wavelength of tunable fiber ring laser based on filter the characteristics of WDM was successfully demonstrated. Under the multi-wavelength scanning mode and consecutive wavelength mode, the changes of wavelength were observed in time domain.

进而提出了利用波分复用器的滤波特性来实现光纤可调谐环形激光器多波长变化的时域显示方法，并在多波长扫描模式和连续波长模式下，观测到了时域上波长的变换。

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Let R be a local communicative ring that contains 2 as a unit or a communicative integral domain of characteristic other than 2.Let N be the nilpotent subalgebra generated by positive root vectors of chevalley algebra of type D_n ( n ≥ 4) over R.

设R是一个特征不是2的整环或是一个以2为单位的局部环，N是R上Dn（n≥4）型Chevalley代数的由正根基向量生成的幂零子代数。

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The inhibitor of apoptosis protein ( IAP) family is a sort of important factors of inhibiting apoptosis, which is characterized by the presence of one or more baculoviral IAP repeat domains at the amino terminal, possessing or not a carboxyl terminal RING zinc-finger domain.

凋亡蛋白抑制因子家族是一类重要的抗细胞凋亡因子，该家族结构的共同特点是N端含有一个或多个串联的杆状病毒IAP重复序列，C端含或不含有一个环指结构。

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