聚酯纤维表面均匀光滑，无条纹，横截面呈圆形。
Polyester fibers have a smooth, uniform surface with no striations and are circular in cross section.
利用火花隙技术和锥形内反射棱镜，可以获得圆形试验药柱贯穿的多重记录，这种新方法被称为多重条纹辐射测量技术。
Using the flash gap technique and a conical internally reflecting prism one can obtain a multiple recording of detonation breakthrough at the peri…
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