Hand lay-up ||手工鋪疊，手工鋪貼
Hardness testing machine||硬度測試儀
Hauling truck||拖車
Header board outside panel||前板外板
Headrest||靠枕
Heat barrier material||隔熱材料
Heat forming||熱成型
High molecular material||高分子材料
High pressure bag molding||高壓袋成型工藝
High pressure injection moulding||高壓注射成型，高壓注射模塑
High-strength structural adhesives||高強度結構粘合劑
High temperature coating||高溫涂層
Hose support||軟管支架
Hub assembly||轂組件
Hub bearing||車輪輪轂軸承
Hydraulic device||液壓裝置
Hydraulic engine||液壓發動機
Hydrostatic strength||流體靜力強度
IMC(In-Mold Coating)||模具內部涂層
Immersion paint||浸漆
Immersion test||浸漬試驗，浸泡試驗
Immovable support||固定刀架
Impact analysis||碰撞試驗撞擊分析
Impact bending||沖擊撓曲
Impact specimen||沖擊試樣
Impegnate||浸漬
Impelling strength||沖擊韌性
Injection head||注射頭
Injection-moulded composites||注射模塑復合材料
Injection moulded part||注塑制件
Injection nozzle||注射噴口，壓注噴口
Intermittent entry||間歇供給，不連續供給
Intermittent failure||間接性故障
Izod test||懸臂沖擊試驗
Jack||千斤頂，起重器；傳動裝置
Jack engine||輔助發動機
Jackbit insert||切刀，刀具，刃口
Jacket||護套，套管，保護罩，蒙皮
Jar-proof||防震的
Jaw||鉗口；定位銷
Jell||膠凝，凝固，固結
Jet milling||噴射研磨
Jig||夾具，定位模具
Jig-adjusted||粗調的
Job program||工作程序
Joining nipple||接合螺管
Joining on butt||對頭接合
Joint face of a pattern||分模面
Joint gate||分型面內澆口
Joint packing||填充墊圈，接合填密
Joint sealing material||填縫料
Joint-shaped support||鉸接支架
Joint strenght||連接強度
Jump welded tube||對縫焊管，焊接管
Junction bolt||接合螺栓
Junction point||接點