critical ray临界光线criticaladj.批评的；挑剔的；决定性的；危险的adj.临界的critical depth of wave base波蚀临界深度critical period supposition关键期假设critical deformation energe[电] 临界变形态Critical current density Jc临界电流密度JcCritical sedimentation rate临界沉降速度critical high-power level[电] 临界高压率位准critical-angle scattering临界角散射critical fraction defective临界不良率Critically cerebral disease危重颅脑疾病critical period of moisture水分临界期