In the A, B, C, D and F grading system, the first four letters are typically considered passing grades.
在A、B、C、D和F评分体系中，前四个字母通常被认为是及格。
Figure 3: Performance TAB shows you a letter grade (a, b, c, d, f) and a percent grade (1-100).
图3：性能标签使用字母(A,B,C,D,F)表示等级以及当前等级(1- 100)。
CrashMetrics ticks all the important boxes: a accuracy, b correct level of mathematics, c understandability, d robustness, e flexibility, f ease of use.
CrashMetrics符合下列一切要求：a准确，b正确的量化程度，c易理解，d稳定，e灵活，f易用。
Another thing, all your prices are on a C. I. F. basis. We 'd rather you quote us F. O. B. prices.
还有一件事，你们的报价都是成本加运费保险费的到岸价格，我们希望你们能报船上的交货价。
To explore the extraction methods of genomic DNA of parasitic mites Demodex folliculorum (D. f. ) and Demodex brevis (D. b. ).
探索人体毛囊蠕形螨和皮脂蠕形螨DNA的提取方法。
Ultrasonic extraction was used to extract the gypenosides from fresh leaves sample(F), fixed sample(X), baked sample(B), air-dried sample(A) and dry tea sample(D) of Gynostemma pentaphyllum.
用超声法提取绞股蓝鲜叶样、杀青样、烘干样、风干样以及绞股蓝袋泡茶干茶样的总皂甙， 并测定其含量。
Ultrasonic extraction was used to extract the gypenosides from fresh leaves sample(F), fixed sample(X), baked sample(B), air-dried sample(A) and dry tea sample(D) of Gynostemma pentaphyllum.
用超声法提取绞股蓝鲜叶样、杀青样、烘干样、风干样以及绞股蓝袋泡茶干茶样的总皂甙， 并测定其含量。
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