极性分布 meaning in English
polar contribution
Examples
- The natures of the probe and formation mechanisms in these techniques are different ; therefore , the images of spm can reflect different properties of sample surface . in this work , related properties of ferroelectric thin film were investigated as followed : the main factors determining the image formation of piezoresponse force microscopy ( pfm ) and scanning nonlinear dielectric microscopy ( sndm ) were studied . to avoid the misreading of the same conductive tip with different state , a new method of polarization distribution mapping with nonconductive tip was proposed , and the result of experiment demonstrated that the polarization distribution of ferroelectric thin films could be characterized well by the new approach
本工作主要分为以下几个部分:从研究铁电薄膜的压电响应力显微镜( pfm )和扫描非线性介电显微镜( sndm )成像的影响因素入手,讨论了针尖对成像质量的影响;为降低实验成本、减小导电探针针尖状态变化对铁电薄膜微区电性能测试的负面影响,提出了以非导电探针检测微区极性分布的方法,并在现有spa - 300hv型spm的实验平台上以pfm模式成功实现了新方法对铁电薄膜极性分布的表征。 - At the beginning , the cytoplasm is evently distributed , then it is polar - distribution and at last it only remains between the apical cap and the sperm nucleus . during the period of spermatogonium , chromatin in the nucleus is in the shape of conglomeration and the nucleus is big ( i . e . the proportion of the nucleus to cytoplasm is bigger than spermatocyte ) . at the stage of primary spermatocyte , chromatin accumulates to sc complexity . the nucleus of the mature sperm takes the shape of a plate and filmentous chromatins exist freely in uncondensed nucleus
精子发生过程中，细胞器由少到多，到最后解体；细胞质从均匀分布，到精细胞期极性分布，最后残留于成熟精子的顶帽和精核之间；细胞核在精原细胞期，染色质异固缩，胞核大，即核质比大于后续的精母细胞；在初级精母细胞中，染色质凝聚为sc复合体，到成熟精子，精核呈碟状，染色质呈丝状游离于非浓缩的核中。