objective function 目標函數

offset 偏置式

offset circle 偏距圓

offset distance 偏( 心 ) 距

offset knife-edge follower 偏置尖底從動件

offset roller follower 偏置滾子從動件

offset slider-crank mechanism 偏置曲柄滑塊机构

oil bearing 含油軸承

oil bottle 油杯

oil can 油壺

oil consumption 耗油量

oil consumption factor 耗油量系數

oily ditch seal 油溝密封

Oldham coupling 雙轉塊机构

on-net design, OND 网上設計

open chain mechanism 開鏈机构

open kinematic chain 開式鏈

open-belt drive 開口傳動

operation control device 操縱及控制裝置

operation mechanism 工作机构

optimal design 优化設計

ordinary gear train; gear train with fixed axes 定軸輪系

ordinate 縱坐標

original mechanism 原始机构

oscillating bar 擺杆

oscillating follower 擺動從動件

oscillating guide-bar mechanism 擺動導杆机构

other mechanism in common use 其他常用机构

outer ring 外圈

output link 輸出构件

output mechanism 輸出机构

output shaft 輸出軸

output torque 輸出力矩

output work 輸出功

overlap contact ratio 縱向重合度

packer 打包机

paired mounting 成對安裝

parabolic motion 拋物線運動

parabolic motion; constant acceleration and deceleration motion 等加等減速運動規律

parallel combined mechanism 并聯組合机构

parallel helical gears 平面軸斜齒輪

parallel key 普通平鍵

parallel mechanism 并聯机构

parameterization design, PD 參數化設計

partial balance of shaking force 慣性力部分平衡

passive degree of freedom 局部自由度

path generation 軌跡生成

path generator 軌跡發生器

pawl 棘爪

pedal 踏板

periodic speed fluctuation 周期性速度波動

phase angle of unbalance 不平衡相位

pin 銷

pinion 小齒輪

pinion and rack 齒輪齒條机构

pinion cutter; pinion-shaped shaper cutter 齒輪插刀

pinion unit 齒輪傳動系

pitch 周節

pitch circle 節圓

pitch cone 節圓錐

pitch cone angle 節圓錐角

pitch curve 理論廓線

pitch curve 凸輪理論廓線

pitch diameter 節圓直徑

pitch line 節線

pitch point 節點

pitting （疲勞）點蝕

planar cam 平面凸輪

planar cam mechanism 平面凸輪机构

planar kinematic pair 平面運動副

planar linkage 平面連杆机构

planar mechanism 平面机构

planar pair, flat pair 平面副

planet gear 行星輪

planetary differential 封閉差動輪系

planetary drive with small teeth difference 少齒差行星傳動

planetary gear train 行星輪系

planetary speed changing devices 行星輪變速裝置

planetary transmission 行星齒輪裝置

plasticine 橡皮泥

pneumatic mechanism 气動机构

pointing; cusp 尖點

polar coordinate manipulator 球坐標操作器

poly V-belt 多楔帶

polynomial motion 多項式運動規律

pose , position and orientation 位姿

positive-drive (or form-closed) cam mechanism 形封閉凸輪机构

potted component 密封元件

powder metallurgy 粉末合金

power 功率

power screw 螺旋傳動

power spring 渦圈形盤簧

preload 預緊力

pressure 壓力

pressure angle 壓力角

pressure angle of base circle 基圓壓力角

pressure angle of involute 漸開線壓力角

prime mover 原動机

primer mover 原動机

prismatic joint 移動關節

prismatic pair, sliding pair 移動副

productive resistance 生產阻力

pulsating stepless speed changes 脈動無級變速

punch 衝床