Change rules of chemical macro-composition contents in muscle of chinesenative chickens;
地方鸡肌肉中常量化学成分含量变化规律研究
The analysis of the main chemical elements in the section shows that the contents of Al_(2)O_(3, )Fe_(2)O_(3)+FeO, CaO, MgO, K_(2)O, Na_(2)O and TiO in the lacustrine facies, loess and palaeosol are higher than those in the aeolian palaeo-dune sands, but the contents of the SiO_(2) take on converse change.
剖面常量化学元素分析显示:湖相、黄土和古土壤中的Al2O3、Fe2O3+FeO、CaO、MgO、K2O、Na2O和TiO含量基本上高于风成沙丘砂,而SiO2则呈相反变化,构成了与沉积旋回相应的150kaBP以来25个元素变化旋回。
Analyses of the main chemical elements in the section shows that the contents of Al2O3; Fe2O3+FeO, CaO, MgO, K2O, Na2O and TiO2in the lacustrine facies, loess and palaeosol are higher than those in the aeolian palaeo-dune sands, but the contents of the SiO2 take on converse change, which constitutes 25 element-chan.
该剖面常量化学元素分析显示,湖相、黄土和古土壤中的Al_2O_3、Fe_2O_3+FeO、CaO、MgO、K_2O、Na_2O和TiO_2含量基本上高于风成砂丘砂,而SiO_2则呈相反变化,构成了与沉积旋回相应的25个元素变化旋回。
Energy-saving principle of vibratory machinery design based on constant potential energy;
基于势能为常量的振动与冲击机械节能原理
The characteristics of constants, prepositional variables and some generalized literals of LP (X) were d iscussed, and theirα-resolution fields were obtained.
讨论了LP(X)的常量、命题变元和一些广义文字的性质,并得到了它们的α-归结域。
Through analyzing mathematic problems,constructing a system related to the problem to study constants and variables is helpful to connect individual variables with each other.
通过分析数学问题,构建与问题相关的系统,在系统内应用辨证的观点分析常量与变量,使孤立的变量相互联系。
Semantic structure includes "constants" and "variables",where constants keep in harmony with the expression of selected sentence patterns,while variables are real cause that affects the sentences pattern choice.
语义结构包括“常量”和“变量”,常量对取舍句式的表达不施加影响,而变量则是造成各种取舍句式差异的真正原因。