1) enable
[英][ɪ'neɪbl] [美][ɪ'nebḷ]
允许;生效
2) allowable equivalent grain size
允许等效粒径
3) the coverage allowed by ecology
生态允许覆盖度
1.
By analyzing and comparing several concepts about vegetation coverage given by other specialists,several new threshold of vegetation coverage are put forward:the coverage allowed by ecology,the coverage demanded by ecology and the coverage allowed by economy,then the methods are given to calculate.
通过对已有的关于植被覆盖度的概念进行分析比较,提出几个新的植被建设覆盖度阈值生态允许覆盖度、生态要求覆盖度和经济允许覆盖度,并给出了它们的计算方法。
4) assent
[英][ə'sent] [美][ə'sɛnt]
允许;允许书
5) allow
[英][ə'laʊ] [美][ə'lau]
允许,准许
6) permit
[英][pə'mit] [美][pɚ'mɪt]
允许,许可
补充资料:调和平均粒径
分子式:
CAS号:
性质:在混合颗粒中,直径为d1、d2、…dn的颗粒的质量分率,分别为x1、x2、…xn,则混合颗粒的调和平均直径可按下式计算:
CAS号:
性质:在混合颗粒中,直径为d1、d2、…dn的颗粒的质量分率,分别为x1、x2、…xn,则混合颗粒的调和平均直径可按下式计算:
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条