The text introduce the characteristic, principium, configuration, type, use and application of type drum microfilter.文中介绍了新型瓦楞面微孔过滤机的特点 、 工作原理 、 结构 、 选型 、 使用场合和应用实例....
At first grey light Otto and Norbert awakened to find that it was snowing heavily.黎明的曙光刚刚降临,奥托和诺贝特就醒来了,发觉漫天下着大雪.Otto jumped onto the foot of Mom's hospital bed, and stayed.它敢跳上我妈妈的病床床脚处, 待在那儿.Louise Otto - Peters, G...
She has hazel eyes.她有一双淡褐色的眼睛.They were standing in the shade of hazel bushes.他们便站在浓荫的榛树下.The Country Mouse was sitting under a hazel thicket plucking nuts.乡鼠正坐在榛树丛下摘硬果....