The third is the establishment of marker-free and skelecton-free transformation vector systems, which are efficient and simple.
第三是着力发展无标记基因、无载体骨架的简单高效转
体
。
The third is the establishment of marker-free and skelecton-free transformation vector systems, which are efficient and simple.
第三是着力发展无标记基因、无载体骨架的简单高效转体。
Metal hydroxides like aluminium trihydroxide (ATH) or magnesium dihydroxide (MDH) are commonly used halogen-free flame retardants in polyolefins.
金属
如氢铝（ATH）或氢
（MDH）是常用的无卤阻燃体。
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