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self-management distribution
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出版社、报刊社所出版图书、报纸、杂志的发行业务,不委托邮局发行,而由本机构自主经营,自设发行机构,自建发行站、发行网络等,自行对书报刊进行宣传推广、收订和投递的书报刊发行制度和形式。
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embryo sac
embryo sac development
embryo sac mother cell
embryo sex identification
embryos implantation
embryos,protoplanet
embryo transfer
embryotransfer
embryo transfer gun
embryo transfer pregnancy rate
EMC
EMCCD
EMC technology of electric vehicle
EMC testing between spacecraft and launch site
EMC testing between spacecraft and launch vehicle
EMC testing of the launch vehicle
EMC testing system
EMC test of the spacecraft in-orbit
EMC测试系统
EMD
Emden
Emden crater
Emden differential equation
Emden equation
Emden-Fowler differential equation
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