?铁粉系焊条    iron powder type electrode

?实心铁柱    iron solid pillar

?铁工厂    iron works

?铁钉病(木船)    iron-sick (or nail sickness)

?不规则畸变,不规则失真    irregular distortion

?不可逆性    irreversibility

?单转向引擎,不可逆转引擎    irreversible engine

?单向机,不可逆机    irreversible engine

?非旋性流    irrotational flow

?印度验船协会    IRS (= Indian Register of Shipping)

?印度铁道标准规范    IRSS (= Indian Railway Standard Specification, India)

?印度国家标准    IS (= Indian Standards, India)

?爱尔兰国家标准    IS (= Irish Standards, Ireland)

?美国仪器学会    ISA (= Instrument Society of America, U.S.A.)

?等熵效率    isentropic efficiency

?等熵膨胀    isentropic expansion

?伊修吾[纵向]肋系    Isherwood framing system

?国际标准化组织    ISO (= International Organization for Standardization)

?国际标准货柜尺寸    ISO container dimensions

?等压膨胀    isobaric expansion

?等压线    isobaric line

?等时[性]调速器    isochronous governor

?等时横摇    isochronous rolling

?等倾线    isoclinal (or iso- clinic) line

?等倾线    isoclinal (or isoclinic) line

?等磁力线    isodynamic line

?等磁差线    isogonic line

?分隔链    isolating link

?隔离开关    isolating switch

?隔离开关    isolating switch (or disconnecting switch)

?等磁线    isomagnetic line

?等角图    isometric plan

?间苯二酸型树脂    isophthalic type (or iso- type) resin

?等温变化    isothermal change

?等温压缩    isothermal compression

?等温膨胀    isothermal expansion

?等温线    isothermal line

?面内等方性材    isotropic materials

?国际造船发展学会    ISP (= International Shipbuilding Progress)

?国际船舶及海洋结构会议    ISSC (= International Ship and Offshore Structures Congress)

?配发室    issuing room

?国际材料试验协会    ISTM (= International Society for Testing Materials)