英语人>网络例句>碱化 相关的搜索结果
网络例句

碱化

与 碱化 相关的网络例句 [注:此内容来源于网络,仅供参考]

Finally, N ethey[3,3 dimethyl spiralindoline naphthoxazine]was synthesized by the addition of 1 nitroso 2 naphthol also,the photochromic mechanism of the substance and its photochromic phenomenon in ethanol were studied.

报道了以苯肼和 3 甲基 2 丁酮为原料首先合成 2 ,3 ,3 三甲基吲哚,吲哚再与碘乙烷亲核取代,碱化得费舍尔碱,最后与 1 亚硝基 2 萘酚作用合成N 乙基 [3 ,3 二甲基螺吲哚啉萘并恶嗪 ]的全过程,并研究了该物质的变色机理以及在乙醇溶剂中的光致变色现

There are thinks the double features of saline and alkaline for the formation and evolutionprocess of the salinization soils in this region,the generation intensity and scale are related withgeomorphological types,shallow water geochemical types,shallow water table and soil structureetc.,presents the quantity relationship between the salinization degree of the soils,shallow watertable and mineralization,expounds the four stage and seasonal succession features of slattransference and inversion,discuss the interaction between ions in shallow water and soils and thethe regularity of the salt transference and accumulation under freeze-thaw action.

本文在野外调查、监测及实验研究的基础上提出松嫩平原盐渍土的形成过程存在盐化与碱化双重作用,其发生强度和规模与地貌、潜水类型、径流条件、潜水水位、土壤结构有关,提取出潜水埋深、矿化度与土壤盐渍化程度关系的定量指标,以及土壤盐分迁移转化季节性变化的四个阶段及其特征。同时重点研究了潜水与土壤之间元素交互作用及冻融作用下盐分迁移和聚积规律,为土壤次生盐渍化的防治提供了理伦依据和技术支撑。

第16/16页 首页 < ... 8 9 10 11 12 13 14 15 16
推荐网络例句

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。

There is no differences of cell proliferation vitality between labeled and unlabeled NSCs.

双标记神经干细胞的增殖、分化活力与未标记神经干细胞相比无改变。