CARPENTER’S RULE; RULE  木工尺

left-hand rule (fleming’s rule for motors)  左手定则

absolutely necessary  必不可少

additional necessary condition  附加的必要条件

and problems necessary to pay attention  应注意的问题

average necessary buffer time  平均必要缓冲时间

be necessary  必然

circulate necessary funds  民间融资

Conditions necessary  配套条件

density of geometrically necessary dislocation  几何必需位错密度

First order necessary condition  一阶必要条件

first-order necessary condition  一阶必要条件

first-order necessary conditions  一阶必要条件

fixed number of years necessary for redemption  回收年限

Fritz John necessary optimality condition  Fritz John必要最优性条件

full and necessary conditions  充要条件

Full-necessary strategy  充要策略

inspection and repair as necessary  按需要进行检修

K-T necessary condition  K-T必要条件