| 单词 | partial vacuum |
| 释义 | > as lemmaspartial vacuum partial vacuum n. Physics a space largely but not totally free of air or other gas. ΚΠ 1805 M. Lewis Jrnl. 2 July in Jrnls. Lewis & Clark Exped. (1987) IV. 351 [The air] glides down the sides of these mountains & decends to the plains, where by the constant action of the sun on the face of an untimbered country there is a partial vacuum formed. 1933 S. W. Cole Pract. Physiol. Chem. (ed. 9) v. 115 With the pump connections shown in fig. 25, the abolition of the partial vacuum is readily accomplished without danger. 1993 Guardian 2 Nov. (Educ. section) 12 The air clings to the curve and creates a low-pressure area or partial vacuum around the control valve. < as lemmas |
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