Q-percentile life,可靠壽命

quad array,方陣

quadrant-edge orifice plate,1/4圓周邊緣孔板

quadrant electrometer,象限靜電計

quadrupole field,四极場

quadrupole ion trap,四极离子阱

quadrupole mass filter,四极濾質器

quadrupole mass spectrometer,四极質譜計

quadrupole probe,四极探頭

quadrupole residual gas analyzer,四极殘余气体分析器

quadrupole rods,四极杆

qualification,鑒定

qualification standard,鑒定標准

qualification test,鑒定試驗

qualitative analysis,定性分析

quantitative differential thermal analysis (QDTA),定量差示熱分析

qualitative physical model,定性物理模型

quality,質量

quality assurance,質量保証

quality control (QC),質量控制

quality inspection,質量檢驗

quality management,質量管理

quality supervision,質量監督

quantitative analysis,定量分析

quantitative differential thermal analysis,定量差熱分析

quantitative differential thermal analyzer,定量差熱（分析）儀

quantity of heat,熱量

quantity of illumination,光照量

quantity of radiant energy,輻射能量

quantity of radiation,幅射能量

quantity to be measured,被測量

quantization,量化

quantization error,量化誤差

quantized error,量化誤差

quantized noise,量化噪聲

quantized signal,量化信號

quartet,四重布置；四重檢測

quarter circle orifice plate,1/4圓孔板

quartz-Bourdon tube (pressure)gauge,石英彈簧管壓力計

quartz crystal unit humidity transducer[sensor]晶体振子式濕度傳感器

quartz module,石英組件

quartz spring gravimeter,石英彈簧重力儀

quartz thermometer,石英溫度計；石英溫度表

quasi-equilibrium theory,准平衡理論

quasi-molecular ion,准分子离子

quasi-periodic vibration,准周期振動

quasi-rigid rotor,准剛性轉子

quasi-sinusoidal quantity,准正弦量

quasi-static unbalance,准靜不平衡

quasilinear chareacteristics,准線性特性

quenching,阻塞

question and answer mode,問答式

queuing theory,排隊論

quick thermophysical property measuring apparatus,熱物性快速測定儀

quintet,五重布置；五重檢測