光参，海参的一类。体表色黑而无刺，外形偏圆，肉厚皮薄。主要分布于中国南海，北美东部海岸沿线。
数值模拟了拍瓦激光器前端非共线光参变放大（OPA）过程中存在波前畸变的抽运光对信号光光束质量的影响。
The influence of wave-front-distorted pump pulse on the beam quality of the amplified signal pulse in the non-collinear optical parametric amplification(OPA) is numerically simulated.
WISE的红外眼，可以透过发光体捕捉到星云的尘埃，这些尘埃也由于参宿一发光而升温。
WISE's infrared eye, however, can see past the glow to capture the nebula's dust, which is also being warmed by light from Alnitak.
爱色丽产品线最初的产品包括光密度仪和感光计，可用来测量光或照相密度并按参比标准对菲林进行曝光。
The X-Rite product line began with densitometers and sensitometers used to measure optical or photographic density and to expose photographic films to a standard reference.
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