multiloop controller,多回路控制器

multimeter,万用電表

multiple channel recorder,多通道記錄儀

multiple echo method,多次反射法

multiple-jet water meter,多注束水表

multiple scattering event,多重散射過程

multiple-sensor cross correlation,多傳感器互相關

multiple-speed floationg action,多速無定位作用

multiple-speed floation controller,多速無定位控制器

multiple step plug,多級閥芯

multiple tide staff,群驗潮杆；水尺組

multiplex link,复用鏈路

multiplexer,多路轉換器；多路轉接器

multiplexing,多路复用

multipoint connection,多點連接

multipoint network,多點网絡

multipoint recorder,多點記錄儀

multiprocessing,多道處理；多處理机

multiprogramming,多道程序設計

multiprojecting plotter,多位投影測圖儀

multisegment model,多段模型

multispectral camera,多光譜照相机

multispectral scanner(MSS),多光譜掃描儀

multistage decision process,多段決策過程

multistate logic,多態邏輯

multistratum control,多段控制

multistratum system,多段系統

multivariable control system,多變量控制系統

n-exponent,n-指數

N.T.C.thermistor,負溫度系數熱敏電阻器

Nansen bottle,南森采水器

Nansen opening-and-closing net,南森開團式网

narrow-band filter,窄帶濾波器

narrow-band random vibration,窄帶隨机振動

narrow band spectrum,窄波段

national satellite,國土衛星

national standard,國家標准

natural convection,自然對流

natural electric-field method instrument,自然電場法儀器

natural environment,自然環境

natural field electro-detector,天然場電測儀

natural frequency,固有頻率

natural frequency measurement,固有頻率的測量

natural frequency of rotor/bearing system,轉子支承系統固有頻率

natural gamma spectromenter of logger,自然伽瑪能譜測井儀

natural inherent frequency,自然固有頻率

natural mode of vibration,固有振型

near field,近場

near infrared range(NIR)remote sensing,近紅外遙感

near-optimality,近优性

nearest-neighbor,最近鄰

nebulizer,霧化器

negative feedback,負反饋

negative knives linear,負刀聯線

negative pressure,負壓；真空

negative shock response spectrum,負衝擊響應譜

negative strain,負應變

negative tempperature coefficient thermistor,負溫度系數熱敏電阻

nephelometer,渾濁度表

nephoscope,測云器

Nernst equation,能斯特方程

nest,嵌套

net pyrgeometer,淨地球輻射表

net pyrradiometer,輻射平衡表

net radiation,淨輻射；輻射平衡；輻射差額

net retention time,淨保留時間

net retention volume,淨保留体積

net sounder,网位儀

net terrestrial radiation,淨地球輻射

network frame,网絡幀

network management,网絡管理

network model,网絡模型

network protocol,网絡協議

network technique,网絡技術

neutral absorption,中性吸收

neutral filter,中性濾光片

neutral zone,中間區

neutrally buoyant float,中性浮標

Newton's fluid,牛頓流体

neutron dosimeter,牛頓流動定律

neutron dosimeter,中子劑量計

neutron logging instrument,中子測井儀

neutron fraiograghy,中子射線照相術

neutron spectromenter,中子能譜儀

neutron-gamma radiometer,中子伽瑪輻射儀

Nickel-Chromium/CopperNickel thermocouple,鎳鉻-銅鎳熱電偶

Nickel-Chromium/NickelAluminium[Silicom] thermocouple，鎳鉻-鎳鋁[硅]熱電偶

Nickel-Chromium-Silicom/Nickel-Silicom thermocouple,鎳鉻硅鎳硅熱電偶

Nier-Johnson geometry mass spectrometer,尼爾-約翰遜型 雙聚焦質譜計

NIM bin NIM,机箱

Niskin sterile water sampler,尼斯金無菌采水器

nitrile rubber(Buna N),丁晴橡膠

nitrogen dioxide trnsfer furnace,二氧化氮轉化爐

nitrogen-oxide analyzer,氮氧化物分析儀

NMR absorption band,核磁共振吸收帶

NMR absorption line,核磁共振吸收線

NMR equipment,核磁共振儀

NMR line width,核磁共振線寬