מילוניםהפורוםפרטי הקשר

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trace elements

['treɪs'elɪmənts]
.כִּימ microelemente n
trace element
.חַקלָ microelement n
.כַּלְ oligoelement n
trace element Any of various chemical elements that occur in very small amounts in organisms and are essential for many physiological and biochemical processes
microelement n