Comparison of the three types of essential oils with the control of a series of experiments, the number of bottles in each batch of the contaminated bottles (x. ̅) average percentage of contamination (x ̅) Control 100 18 18% essential oils of clove 100 6 6% Oil Essential 100 8 8% essential oils eucalyptus 100 7 7. %
การแปล กรุณารอสักครู่..