በባዮሎጂ ወይም በኬሚስትሪ ዘርፎች ያሉ ተመራማሪዎች የሚያጠኑትን አካል በቤተ-ሙከራ ውስጥ በመያዝ እንደፈለጉ ሙከራዎችን ማከናወን ቢችሉም፣ በሥነ-ፈለክ (Ast...
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