大家在查： 33.4 卡森·麦卡勒斯马克·西蒙 fangyzhdawning 穆罕默德·尤 hote 图·泽一百四十五亿 Nanital 沙耶夫

46.8%

46.8%

46.8%

46.8%

1

In this paper , bendazac lysine was synthesized from phenyl hydrazine by 4 steps , and an overall yield was up to 46 . 8%.

本文报道以苯肼为起始原料，经 4 步反应，制得苄达赖氨酸，总收率可达 46 .

2

However , between 1978 and 2009, the country's urbanization rate increased from 17. 4% to 46. 8% a scale unprecedented in human history.

然而 1978年到 2009年，中国的城市化率从 17%增长到 46.8%，规模之大史无前例。

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