谓语动词现在时与过去时区分
The physical properties of the modified SC are listed in Table 3, which were obtained by parallel tests, and their values of the standard deviation were all less than 0.33%.
最后面的the standard deviation were all less than 0.33%.中的were对吗？是不是要使用现在时才对？
最佳答案 2019-01-20 09:51
1. are listed in Table 3：科普用语。表示“在表3 被列出”，指现在的情况。
2. which were obtained：指前文的“物理性能通过平行试验获得”。这个动作在过去已经发生。
3. were all less than 0.33%，其标准偏差均小于0.33%，指“当时获得这些物理性能时的数据”，也要用一般过去时。
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