The timber is graded according to its thickness.木材按厚度分级.The method of graded dichotomies enables this to be done.用等级均分法可以做到上述那一点.The texts should be graded in order of difficulty.课文要按难易程度编排.We xeroxed thirty sample essay...
坎贝尔公司的总裁退休后，麦戈文被选定为继任者。When the chairman of Campbell's retired, McGovern was named as his successor.看到乔治 - 麦戈文又跳上了竞选总统的游乐转椅,人们不禁要问:究竟是什么东西促使这些人前来竞选的.Watching George McGovern hop on the presidential merry - go - roun...
At sufficiently high temperatures and alkalinity, fatty esters may be hydrolyzed to produce soaps.在足够的温度和碱度的情况下, 脂护酯可能被水解产生皂类.Incorporating organic material into chalky soils will reduce the alkalinity.在白垩质土壤中添加有机物可降低其碱性...