Different from many kinds of crystal morphologies of cac2o4 formed in bulk aqueous solution , uric acid template prohibited the formation of cot , but promoted the orientation growth of ( 020 ) face of com and ( 100 ) face of cod . while the mixture of citrate and uric acid obviously inhabited crystal growth of cot , cod and orientation growth on ( 020 ) face of com . cac2o4 crystallized on the ca2 + - rich ( 101 ) axis of com 结果表明，纯水体系中形成了沿多个晶面生长的多种晶型的草酸钙水合物，尿酸模板抑制了cot的生成，但明显促进了com的( 020 )面及cod ( 100 )面的生长，而柠檬酸与尿酸的混合模板则抑制了cot 、 cod的生长以及com沿( 020 )面的生长，使caczo4几乎都沿com的( i01 )面生长。
Abstract : the resource distribution of aralia elata in northeast china were investigated . by means of the optical microscope , the features of histology and powder of cortex of this plant were first examined . in the cortex , threre are a large number of secretory ducts and a small quantity of druses of calcium oxalate 文摘:对分布在我国东北地区的药用植物辽东?木的资源进行了调查，以光学显微镜对其根皮的组织和粉末进行了观察，其根的皮层较层，并含有大量的树脂道，粉末具有大量的淀粉粒及少量草酸钙结晶
