参考星：已知位置和/或星等的恒星，用于确定图片的底片常数和光度校准。
Reference Stars: Star with known position and/or magnitude, that are used to find the plate constants and photometric calibration of an image.
科学家和工程师在接下来的几周内将校准开普勒的科学仪器——光度计，并调节望远镜基线以获得最佳焦距。
Scientists and engineers will spend the next few weeks calibrating Kepler's science instrument, the photometer, and adjusting the telescope's alignment to achieve the best focus.
建立了快速检测水产品中呋喃唑酮残留量方法。 采用分光光度法，以校准曲线法、标准加入法检测海虾、养殖虾中呋喃唑酮残留量。
A spectrophotometric method for the fast determination of furazolidone residue in the aquatic products with standard curve and standard addition was developed.
建立了快速检测水产品中呋喃唑酮残留量方法。 采用分光光度法，以校准曲线法、标准加入法检测海虾、养殖虾中呋喃唑酮残留量。
A spectrophotometric method for the fast determination of furazolidone residue in the aquatic products with standard curve and standard addition was developed.
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