A nd in time 在适当的时候
The test results showed that the scorch time of rubber compound ex tended by adding nano-zinc oxide, and the tensile strenght, abrasion resistance a nd aging property of its vulcanizate improved;
试验结果表明,纳米氧化锌可延长胶料的焦烧时间,提高硫化胶的拉伸性能和耐磨性能,硫化胶的耐老化性能也较好;
In the day time the street was dusty, but at night the dew settled the dust a 'nd the old man liked to sit late because he was deaf a 'nd now at night it was quiet a 'nd he felt the difference.
白天里,街上尽是尘埃,到得晚上,露水压住了尘埃。这个老人喜欢坐得很晚,因为他是个聋子,现在是夜里,十分寂静,他感觉得到跟白天的不同。
The steelyard clepsydra, a special type of clepsydra, had been a chief time-keeping instrument during the Sui-Tang period a nd the earlier stage of Northern Song dynasty.
秤漏是一种特殊类型的漏刻,在隋唐及北宋前期曾是司天机构的主要计时仪器。
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