The point of degradation, due to attenuation or distortion, at which a signal becomes unusable.由于衰减或失真使得信号变得不能使用的那个退化点.Mortality is the number or volume of trees periodically rendered unusable through natural causes.枯损是一...
The basic principle and one - dimensional mathematic model of MagnetoHydrodynamic ( MHD ) controlled inlet were presented.阐述了 磁控 进气道的基本原理,建立了一 维 数学模型.The stability of large - scale magnetohydrodynamic ( MHD ) modes is cr...