Substances obtained by means of nuclear transformation.
用原子核变换方法获得的物质。
The operation of a machine may involve the transformation of chemical, thermal, electrical , or nuclear energy into mechanical energy, or vice versa.
机械的操作包含将化学能、热能、电能或核能转换成机械能，反之亦然。
Incorporation of a selectable marker gene during chloroplast genetic transformation is essential to obtain transformed chloroplasts, which is the same as nuclear transformation.
与核遗传转化相同，叶绿体遗传转化研究需要有合适的选择标记作为辅助手段。
The energy of the Sun arises not from any burning process but from nuclear fusion, the transformation of hydrogen into helium, in part by a complicated process involving carbon and nitrogen.
大阳的能量不是来自燃烧过程，而是来自由氢到氦的核聚变，是部分由一个涉及碳和氮的复杂过程引起的。
But the same as nuclear transformation, plastid transformation also has the problems of bio-safety of antibiotic markers and development obstacles due to the overexpression of foreign gene.
但同细胞核转基因一样，叶绿体转基因也存在抗生素标记的生物安全性和外源基因的过量表达对植物正常生长发育的影响的问题。
But the same as nuclear transformation, plastid transformation also has the problems of bio-safety of antibiotic markers and development obstacles due to the overexpression of foreign gene.
但同细胞核转基因一样，叶绿体转基因也存在抗生素标记的生物安全性和外源基因的过量表达对植物正常生长发育的影响的问题。
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