不活动突变

These properties produce robust systems that limit the catastrophic consequences of transposon mobilization, which can result in the accumulation of deleterious mutations, changes in gene expression patterns, and conditions such as gonadal hypotrophy and sterility.

这些属性特征构成了一个限制由转座元件活动所造成的严重后果的系统，从而防止转座子侵袭所带来的突变积累，基因表达谱的改变，以及生殖腺发育不良和不育。

In this paper,a revised universal soil erosion e-quation was selected, the effects of errors of this neglection on it were tested by non-parametric hypothetical test method of Kolmogorov-Smirnov for a 22-year period within 21 catchments of the middle Huanghe River region,and the resul...

采用非参数假设检验方法，对年产沙模数估计方程中下垫面因素的时变影响作定性分析，结果表明，对于一般流域，如果没有人类活动或自然灾害破坏导致下垫面条件的突变，下垫面因素对产沙的影响可看作是时不变的。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。