在此条件下合成的产物中活性物含量可达40%.Under the optimum conditions, the content of active substance could reach 40 %.其固体物的质量分数为25%,活性物质量分数为18%.Its solid was 25 % and the activating agent was 18 %.对以氟化钠和一氟磷酸钠为基础的 抗 龋活性物配方的有效性给予了肯定.The ef...
Elliott crossed the finish line just half a second behind his adversary.埃利奥特跨过终点线时仅比对手落后半秒钟。All this, needless to say, had been culled second-hand from radio reports.不用说，所有这些都是从电台报道中采集来的二手材料。"Wait there!" Kathryn rose. "...