astr abbr. 天文学(astronomy)
- The TR-55 served as the template for almost all the portable gadgets we use today.
TR-55是我们今天使用的绝大多数随身电器的样板。 - Characterized by thin layer chromatography and fourier transform infrared spectrometry, the biosurfactants producing by TR-1 was identified as one kind of lipopeptide.
经薄层层析、红外光谱鉴定,TR-1菌产生的生物表面活性剂为脂肽类生物表面活性剂。 - With a trend of the international trade towards liberalization, the preferential rules of origin(PRO)are gradually used as non -tariff barriers in international tr ade.
在国际贸易日趋自由化的背景下,原产地规则尤其是优惠性原产地规则却日渐被用作非关税贸易保护措施。
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