No clear spherulitic morphology was observed in polarizing optical micrograph of PHB - diol.在PHB-diol的偏光显微镜照片中观察不到明显的球晶形态.The morphology of glass surface is observed by polarizing microscope.利用偏光显微镜,拍摄显微照片,观察表面形貌.A new p...
教学的理论与实践the theory and practice of teaching该校“作为外语的英语教学”有两个模块：即语言教学的原则与方法和应用语言学。The school offers two modules in Teaching English as a Foreign Language, viz. Principles and Methods of Language Teaching and Applied Lingui...
The limestone is sufficiently fissured for tree roots to have breached the roof of the cave...石灰岩上有许多缝隙，故而树根能从岩洞顶部长出来。South African vine having a massive rootstock covered with deeply fissured bark.南非藤蔓植物,有很大的根状茎,皮上有很深的裂...