To indicate the feasibility of acetic ester carboxylation process in China based on making process comparison.通过对各种生产工艺的对比,提出了醋酸甲酯羰基化工艺在我国的可行性.The accepted commercial process is based on 2, 4 - difuloroaniline, through c...
这项宣言将创造工作机会放在首位。The manifesto gives pride of place to job creation.萨拉岑成为了首位高尔夫四大满贯赛冠军。Sarazen became the first golfer to win all four majors.目前教育被排在政治议程的首位，这样做非常恰当。Education, quite rightly, is currently at the forefront ...