1.
The Topological Classification of the Quartic Invariant Algebraic Curve Cycles in a Class of Qudratic System;
一类二次系统四次不变代数曲线环的拓扑分类
2.
QUALITATIVE STUDY OF QUADRATIC SYSTEMS WITH SECOND ORDER FINE FOCUS
具有二阶细焦点的二次系统的定性研究
3.
Study on the Grounding Method of Power Auxiliary System and of Anti-Jamming;
电力二次系统接地及抗干扰方法研究
4.
secondary volumetric sweep efficiency
二次采油体积波及系数
5.
Multiple Periodic Solutions for a Class of Subquadratic Lagrangian Systems;
一类次二次Lagrange系统的多重周期解
6.
Analysis of lightning prevention of primary and secondary equipments in power system
浅析电力系统一次、二次设备的防雷
7.
Limit cycle of Hamilton system under quadratic perturbation
一类二次Hamilton系统在二次扰动下的极限环
8.
Periodic Solutions of Second-order Hamiltonian Systems with Super-quadratic Potentials
一类二阶超二次哈密顿系统的周期解
9.
Existence of Subharmonic Solutions for a Class of Subquadratic Hamiltonian Systems;
一类次二次Hamilton系统的次调和解的存在性
10.
secondary signal system
二级信号系统 次级信号系统
11.
Quadratic Selection and Popularization of Superior Clone of Populus alba ×Populus bolleana
银×新无性系二次选优及无性系的推广
12.
Regression estimates: including intercept and coefficients for linear, quadratic and correlation coefficient.
2?归参数：含截距、一次、二次?归参数与相关系数。
13.
The square root and the cubic root of the dielectric constants are linearly related to the volume ratios.
介电常量的二次及三次方根与密度成线性关系。
14.
Subharmonic Solutions for Subliner Second-order Hamiltonian Systems with Impacts;
次线性二阶碰撞哈密顿系统的次调和解
15.
Periodic and Subharmonic Solutions of a Class of Superquadratic Hamiltonian Systems;
一类“超二次”Hamilton系统的周期解和次调和解
16.
Research on the Relation and Close Combination with the First and Second Marketing by Enterprises of Construction Industry;
“一次经营”与“二次经营”的关系及紧密结合探讨
17.
The Period Function for Quadratic Integrable Systems with Quartic Orbits
具有四次轨道的二次可积系统的周期函数
18.
Subnormal Solutions of Second Order Homogeneous Linear Differential Equations with Periodic Coefficients
周期系数二阶齐次线性微分方程的次正规解