【正文】 IKES = ion kinetic energy spectroscopy 離子動能波譜法IMMA = ion microprobe mass analyzer 離子探針質量分析器INAA = instrumental（thermal）neutron activation analysis 儀器（熱）中子活化分析Inc．= inclusive 包括（在內）Indic．= Indicate；indicator；indicated 指出；指示器；指出的INDOR = internuclear double resonance 核間雙共振inorfil．= inorganic fiber（filament） 無機纖維inorg．= inorganic 無機的ins．；insol = insoluble 不溶（解）的INS = ionneutralization spectroscopy 離子中和譜（法）INS = ion neutralizing spectrometer 離子中和譜儀insoly．= insolubility 不溶性int．= internal 內部的int．= international 國際的inter．= intermediate 中間體；中間產物intermol．= intermolecular 分子間的intramol．= intramolecular 分子內的IOD = immediate oxygen demand 直接需氧量t．p．= ignition point 著火點I．P．= induction period 誘導期IPAA = instrumental photon activation analysis 儀器光子活化分析IR = information retrieval 資料檢索IR = infrared ①紅外（線）；②紅外線的I．R．= insoluble residue 不溶殘留物IRS = infrared snectroscopy 紅外光譜學IRT = isotopic ratio tracer 同位素比示蹤（法）IS = internal standard ①內標法；②內標物I SA = international standard atmosphere 國際標準大氣ISE = ion selective electrode 離子選擇電極ISFET = ion selective field effect transistor 離子選擇場效應晶體管ISO = International Organization for Standardization 國際標準化組織ISOL = online isotope separator 在線同位素分離器ISS = ion scattering spectroscopy 離子散射能譜（學）IStd = internal standard ①內標法；②內標物IT = induction time 誘導時間IT = information technology 信息技術IT = interfacial tension 界面張力It．Pat．= Italian Patent 意大利專利IU = international unit（s） 國際單位IUB = International Union of biochemistry 國際生物化學聯合會IUPAC = International Union of Pure and Applied Chemistry 國際純粹化學與應用化學聯合會i．v．；I．V．= iodine value 碘值；碘價IVNAA = in vivo neutron activation analysis 活體中子活化分析；體內中子活化分析I．W．= insied width 內寬度IX = ion exchange 離子交換JJap．Pat．= Japanese Patent 日本專利JAS = Japanese Agriculture and Forestry Standard 日本農林標準JAS = Japanese Agricultural Stadard 日本農業(yè)標準JES = Japanese Engineering Standard 日本工程標準[JIS的前身〕JIS = Japanese Industrial Standard 日本工業(yè)標準J（T）U = Jackson（turbidity）unit 杰克遜（濁度）單位Kk = veloclty constant of chemical reaction 化學反應速度常數K = desree Kelvin（absolute） 開耳芬(絕對)溫度Kb = keyboard 鍵盤KBX = potassium butyl xanthate 丁基黃原酸鉀keal = kilocalorie 千卡；大卡kCi = klocurie 千居里[=103Ci]Kcs；Kc/s = kilocycles per second 每秒千周KDP = potassium dibydrogen phosphate 磷酸二氫鉀keV = kiloelectron volt 千電子伏（特）[＝1000eV]KF = Karl Fischer（method）卡爾費歇爾（法）KIM = kinetic isotope method 動態(tài)同位素（分析）法KS = Korean industrial Standard 朝鮮工業(yè)標準Ks．p．= solubility product constant 溶解度積常數KVA；kvamp = kilovolt ampere(s) 千伏安K．V．I．= kinetic viscosity index 運動粘度指數kwh = kilowatthour(s) 千瓦小時；度（電）KWIC = “keyword in context” index 關鍵詞索引LL = solubility product 溶解度積L．A．= lauryl amine月桂基胺L．A．Ac．= lauryl amine acetate 月桂基乙酰胺lab．；Lab．= laboratory 實驗室LAB = linear alkyl ben。ne 直鏈烷基苯LABS = linear alkyl benzene sulphonic acid 直鏈烷基苯磺酸LAC = linear absorption coefficient 線性吸收系數LAMMA = laser microprobe mass analysis 激光探針質譜分析LAS = linear alkyl benzene sulfonate 直鏈烷基苯磺酸鹽LASER；Laser = light amplification by stimulated emission of radiation ①激光；②激光器LAXD = lowangle Xray diffraction 小角X射線衍射LB = LangmuirBlodgett(film) LB膜l．c．= loco citato[拉] 上述的；上述引文中LC = lethal concentration 致死濃度LC = liquid chromatography 液相色譜（法）L．C．= liquid crystal 液晶LC50 = lethal concentration 50% 半數致死濃度LCC = liquidcolumn chromatography 液相柱色譜（法）LCM = long chain molecule 長鏈分子LC/MS = liquid chromatographymass spectrography 流相色譜質譜（聯用）LCP = long chain polymer 長鏈聚合物l．c．v．；L．C．V．= low calorific value 低熱值LD = lethal dose（藥物）致死（劑）量LD50 = medium lethal dose 半數致死量LD50/30 = lethal dose 50/30 30天后試驗動物半數致死（劑）量LDMDC = lead dimethyl dithlocarbamate 二甲基二硫代氨基甲酸鉛LDPE = low density polyethylene 低密度聚乙烯LEC = liquid elution chromatography 液相洗脫色譜（法）LEC = ligand exchange chromatography 配位體交換色譜（法）LED = least effective dose 最小有效（劑）量LEED = low energy electron diffraction 低能電子衍射LEELS = low energy electron loss spectroscopy 低能電子能量損失光譜法LEES = low energy electron scattering 低能電子散射LFD = least fatal dose 最小致死（劑）量LFSE = ligand field stabilization energy 配位場穩(wěn)定能LG = liquid gas 液化氣體l．h = latent heat 潛熱lhr．= lumenhour 流明時（光通量單位）LIF = laser induced fluorescence 激光誘導熒光lic．= licence 許可證；特許lidar = light detection and ranging 激光雷達lim．= limit 極限；限度linac = linear accelerator 直線加速器LIS = laser isotope separation 激光同位素分離liter．= literature 文獻LIX = liquid ion exchange 液體離子交換LLC = liquidliquid chromatography 液液色譜（法）LLE = liquidliquid extraction 液液提取法LM = laser microanalysis 激光微量分析L．M．= light microscope 光學顯微鏡LMP = low molecular polymer 低分子聚合物LMP = low melting point 低熔點LMW = low molecular weight 低分子量LMWC = low molecular weight pound 低分子量化合物ln = natural logarithm 自然對數Ln = lanthanides 鑭系元素LN = liquid nitrogen 液氮LN = lot number 批號LNG = liquefied natural gas 液化天然氣long．= longitudinal 縱向l．p．；lp；L．P．= low pressure 低壓LP = low polymer 低聚物L．P．= light petroleum 石油醚LPC = liquid partition chromatography 液相分配色譜（法）lq．= liquid 液體LR = laser raman 激光拉曼（譜）LR = lethal range 致死范圍LRS = laser Raman Spectra 激光喇曼光譜LS = literature search 文獻檢索LSAC = liquidsolid adsorption chromatography 液固吸附色譜（法）LSC = liquid scintillation counting 液體閃爍計數LSC = liquidsolid chromatography 液固色譜（法）LSD = least significant difference 最少顯著差l．t．；L．T．= low temperature 低溫LTA = low temperature ashing 低溫灰化LTP = linear temperature programming 線性程序升溫LTP．；T．P．= low temperature polymerization 低溫聚合LV = linear velocity 線性速度LV = low viscosity 低粘度L．V．= low voltage 低（電）壓LWC = liquid water content 含水量lx．= Lux 勒克斯（照明單位）LYR；lyr = layer 層；層次Lys；K = lysine 賴氨酸Mm = mass 質量m = meta 偏；間位m = mile 英里M；m = medium ①介質；②中間的M；m = mole；molar 摩爾8molecular weight 分子量MA = methacrylate 丙烯酸甲酯MA = polymethylacrylate 聚丙烯酸甲酯MaA = maleic acid 馬來酸；順（式）丁烯二酸MAC = maximum acceptable concentration 最大容許濃度MAD = maximum allowable dose 最大容許劑量mag．= Magnetic 磁（性）的M．A