boxwood folding rule  黄杨木折尺

brass folding rule  铜折尺

ivory folding rule  象牙折尺

maple folding rule  枫木折尺

Steel Folding Rule  钢皮折尺; 钢折尺

wooden folding rule  木折尺

folding extension rule  伸长折尺

folding wooden rule  木折尺

CARPENTER’S RULE; RULE  木工尺

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

2D folding simulation  2D折叠模拟

active folding  活褶曲作用; 活褶曲酌; 活褶曲〔作用〕; 活动褶皱

actuator for folding fin stabilizer  自锁式油缸

alpine folding  阿尔卑斯褶皱

Alpine type folding  阿尔卑斯式褶皱

Alpine type of folding  阿尔卑斯式褶皱; 径向尖峰因子

arc of folding  褶皱弧; 压缩弧

Arm folding  交叉臂; 叠臂

arm-folding  交叉臂