| 单词 | packing ring |
| 释义 | > as lemmaspacking ring packing ring n. ΚΠ 1839 R. S. Robinson Naut. Steam Engine Explained 41 On the top of the packing rings comes the junk ring, which occupies the whole space from the boss of the piston to the sides. 2002 Plant Engin. (Nexis) 1 Nov. 68 The flame heats the falling water, which contacts a bed of packing rings where heat transfer occurs. < as lemmas |
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