下降: descend; go or come down; dr ...程序: procedure下降程序图: let-down chart进行穿云下降程序: to execute a letdown procedure水上迫降程序: ditching procdeure; ditching procedure钻具组升降程序: drill-string tripping递归下降分析程序: recursive descent analyzer; recursive descent parser下降: descend; go or come down; drop; fall; decrease (in); decline; fall off; droop; downgrade 逐渐下降 decrease by degrees; 生产[体重] 下降 decrease in production [weight]; 引起下降 bring about its decline; 持续下降 steady decline; 下降到次要位置[地位] be relegated to a secondary position; 出生率下降 a decline in the birth rate; the birthrate is on the decline. 价格下降。 the prices are declining. 飞机正在下降。 the plane was descending. 气温显著下降。 there was a marked drop in temperature. 生产成本逐年下降。 production costs come down every year. 销售量下降了。 sales have dropped off沉积,下降: absenkung倒塌,下降: come down掉下,下降: fall down跌落,下降: fall off放慢,下降: slow down急下降: drop-off减少;下降: decline v. decrease; move from a better to worse position降低;下降: abase净下降: net decline使下降: bring down; dip v下垂, 下降: descensus下降, 减少: dropoff; fall-off下降,降低: go down下降2: gdp下降,跌价: come down下降,减少: drooff下降,衰落: decline