BSL-2 laboratory 二级生物安全实验室
Literal and lighting signs indicating working status should be installed at the entrance of all BSL-2 laboratories.
所有二级生物安全实验室的入口处应安装显示工作状态的文字或灯光信号。
The spectrum showed that BSL was composed mainly of syringl (S), guaiacyl(G) and p-hydroxylphengl (H) units, and the ratio of three uncondensed group (S:G:H)was 2.
图谱分析表明，蔗渣碱木素主要由紫丁香基，愈创木基和对羟苯基三种丙烷结构单元组成，其中未绩合的紫丁香基、愈创木基和对羟羊基含量比为2。
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