The paper introduces the method and application procedure for the accurate measurement on highway cross-section by use of infrared ray instrument based on the principal of polar coordinates.

介绍一种根据极坐标原理和利用红外仪精确测量公路横断面的方法及实施步骤。

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The deuterium lamp is often used as ultraviolet ray lamp in UV measuring instrument, the measuring accuracy of the instrument has close correlation with the stability of radiation energy.

织物紫外线透过率测试仪是衡量织物抗紫外线能力的仪器，氘灯作为优选的紫外光源，其辐射强度的稳定密切关系到测量的精度和一致性。

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Employed by optical microscope, scanning electron microscope, microhardness tester and X ray diffraction instrument, the isothermal decomposition process of high nitrogen austenite was investigated.

利用光学显微镜、扫描电镜、显微硬度计及X射线衍射仪分析了高氮奥氏体的等温分解过程。

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"This is the most spectacular burst ever seen at high energy, " said Dr Valerie Connaughton, a scientist from the University of Alabama, Huntsville, and a member of Fermi's Gamma-ray Burst Monitor (GBM) instrument team.

BBC: Telescope spies cataclysmic blast

X-ray spectrometer is probably the most important instrument on board.

ECONOMIST: Astronomy

The probe entered a special low-altitude orbit for about five months to allow the GRAND instrument to analyze emissions from Vesta's surface that result from collisions between cosmic ray particles and elements in the asteroid's dirt.

MSN: Surprisingly, giant asteroid Vesta covered in hydrogen