spectral emissivity,光谱发射率

spectral half width,光谱半宽度

spectral line,光谱线

spectral position,光谱位置

spectral radiance,光谱辐射亮度

spectral radiation exitance,光谱辐（射）出（射）度

spectral range,光谱范围

spectral resolution,光谱分辨率

spectral slit width,光谱狭缝宽度

spectro chemical analysis,光谱化学分析

spectrofluorophotometer,荧光分光光度计

spectrograph,摄谱仪

spectrometer,光谱仪

spectrometer channel,分光波道

spectrophotometer,分光光度计

spectrophotometric titration,分光光度滴定法

spectropolarimeter,旋光仪

spectroscopy,看谱镜；能谱法

spectrum,光谱；谱

spectrum analyzer,频谱分析仪

spectrum radiator,光谱辐射计

speech recognition,语音识别

speed characteristic,转速特性

speed control system,调速系统

speed effect,速度效应

spherical aberration,球差

spherical phranometer,球形总日射表

spherical phrgeometer,球形地球辐射表

spherical phrradiometer,球形全辐射表

spin axis,旋转轴

spin decoupling,自旋去耦

spin test (of a current-meter),（流速计的）旋转试验

spinning magnetometer,旋转磁力仪

spinning sidebands,旋转边带

spin-sin coupling constant,（核磁共振）自旋—自旋耦合常数

spirit level,气泡式水准仪

split-body valve,分体阀

split core type current transformer,钳式电流互感器

split range opoeration,分程操作

split-ranging,分程

split screen,分区屏幕

split stream injector,分流进样器

splitter,分流器

spot radiation source,点辐射源

spot recorder,光点记录仪

SPOT satellite,斯波特卫星

spot scanning,点扫描

spot size,目标尺寸

spray method,喷雾方法

spraying device,喷雾装置

spring-loaded regulator,弹簧型自力式调节阀

spring-loaded variable-head flowmeter,弹性加载可变压头流量计

spring plate,弹簧盘

spring testing machine,弹簧试验机

spurious echo,楔内反射波

spurious errors,疏忽误差

square-edged orifice plate,直角边缘孔板

square frame of magnetic needle,方框罗针

square profile (pressure) gaege,矩形压力表

square-wave polarogyaph,方波极谱仪

stability,稳定性；稳定度

stability analysis,稳定性分析

stability condition,稳定（性）条件

stability criterion,稳定（性）判据；稳定（性）准则

stability error,稳定性误差

stability limit,稳定（性）极限

stability margin,稳定裕度；稳定裕量

stability method,稳定法

stability of towed body,拖曳体稳定性

stability theory,稳定性理论

stabilizability,可稳性；能稳性

stabilization,镇定；稳定

stabilized load characteristic,稳定负载特性

stabilized supply apparatus,稳定电源

stabilized voltage varistor,稳压电压敏电阻器

stabilizing network,镇定网络

stabilizing period,稳定过程

stable region,稳定域

stable system,稳定系统

stable type gravimeter,稳定型重力仪

stack,栈

stacking test,堆码试验

stadia line,视距线

stadia rod,视距尺

stadia wave gauge,视距测波仪

staff tide gauge,验潮杆；水尺

stagnation pressure,滞止压力

stain sync,应变同步

standard,标准

standard acceleration transducer,标准加速度传感器

standard accelerometer,标准加速度计

standard buffer solution,标准缓冲溶液

standard calorimeter,标准型热量计

standard capacitor,标准电容器

standard cell,标准电池

standard deviation of a single measurement in a series of measurments,测量列中单次测量的标准（偏）差

standard deviation of the arithmetic mean of a series of measurements,测量列算术平均值的标准（偏）差

standard deviation of weighted arithmetic mean,加权算术平均值的标准（偏）差