...research related to microcomputers and their use in classrooms...关于微型电脑及其课堂使用的研究In many places, classrooms are overcrowded and curricula are outdated.许多地方的教室过于拥挤,课程已经过时.New blackboards have been fitted up in all the c...
Some of the food crops failed. However, the cotton did quite well.有些粮食作物歉收。但棉花的收成仍相当不错。Because it was warm, David wore only a white cotton shirt.因为天气暖和，戴维只穿了一件白色的棉衬衣。Prices start at £13.95 a metre for printed cotton.印花棉布...
The Allophycocyanion ( APC ) was purified from a mutant of spirulina platensis ( SP - Dz ).从钝顶螺旋藻突变株 ( SP-Dz) 中纯化别藻蓝蛋白 ( Allophycocyanion,APC ).Included are SMA, K, BNC, N, APC - 7 mm, SMB, SMC, W, V, 3.5 mm, 2.9 mm, 1.8...
Hydrosoft is a modified co - polyester fiber with permanent water transport effect. No hydrophilic needed after dyeing.为运用聚酯改质技术,赋予纤维永久性吸湿排汗的新合纤. 无需使用吸湿排汗剂,就有极佳的吸湿排汗效果....
He helped me get to know a plant called araceae.经他一说我才知道,原来天南星就是虎尾草呀.A new variety of Acorus of Araceae.天南星科菖蒲属一新变种.Anthurium is most relative to Pothos in Araceae.花烛属在天南星科中与石柑属亲缘关系最近....