这一节将只讨论介质分层媒质.Only dielectric stratified media will be treated in this section.光波在激活媒质中来回穿过时,将不断得到加强.The wave continues to grow as It'sweeps back and forth across the active medium.麦克斯韦电磁场方程描写了媒质的这种可测量的扰动,而不去详细讨论以太本...
维管组织经过叶枕进入叶柄.The vascular tissue passes through the pulvinus into the petiole proper.亮绿色椭圆型很薄的叶子, 长而有弹性的叶柄. 通常单个顶芽. 大型.Light green, elliptical, very thin, long flexible petiole. Usually single crown. Large.在茂密的叶柄端部开猩红色花的...