L-R梯形模糊数
L-R trapeziform fuzzy numbers
PLC梯形图设计
design of PLC ladder diagram
R-2R型梯形电阻网络
R-2R resistor ladder network
变步长的梯形法则
variable step-size trapezoid formula
变形梯度分解
deformation gradient decomposition
变形梯度矩阵
deformation gradient matrix
变形梯度凝胶电泳
DGGE denaturing gradient gel electrophoresis
变形梯度凝胶电泳DGGE
denaturing gradient gel electrophoresis DGGE