给我两篇关于航天和克隆的科技英语
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给我两篇关于航天和克隆的科技英语
给我两篇关于航天和克隆的科技英语
给我两篇关于航天和克隆的科技英语
Cloning is the process of creating an identical copy of an original organism or thing.A cloning in the biological sense,therefore,is a molecule,single cell (like bacteria,lymphocytes etc.) or multi-cellular organism that has been directly copied from and is therefore genetically identical to another living organism.Sometimes this term can refer to "natural" clones made either when an organism is asexually reproduced by chance (as with identical twins),but in common parlance,a clone is an identical copy created intentionally.
The term clone is derived from κλων,the Greek word for "twig".In horticulture,the spelling clon was used until the twentieth century; the final e came into use to indicate the vowel is a "long o" instead of a "short o".Since the term entered the popular lexicon in a more general context,the spelling clone has been used exclusively.
Aerospace comprises air and space travel,manufacturing and associated research.Aerospace is a very diverse industry,with a multitude of commercial,industrial and military applications.