I was wrong about it being a casual meeting.我误以为这是个非正式会议。A sharp dresser, Wyatt is never seen in casual clothes.怀亚特衣着入时，从未有人见过他穿便装。Garland tried to appear casual, but he couldn't conquer his unease.加兰努力装出无所谓的样子，可是他没...
介绍了缩二脲在 工农业 上的应用及其合成工艺.In this article the application of biuret in industry & agriculture and its synthetic process are stated.自制的缩二脲产品与羟基丙烯酸树脂所配成的漆具有优良的性能.The paint compounded with the product and hydroxyl acrylic resi...