| 单词 | parrel truck |
| 释义 | > as lemmasparrel truck parrel truck n. = parrel bead n. ΚΠ 1799 Marine Pocket-Dict. Parrel-trucks. a1877 E. H. Knight Pract. Dict. Mech. II. 1634/2 The parral..has strung upon it parral-trucks, that is, small wooden globes to prevent friction..in hoisting or lowering. 1982 C. W. T. Layton Dict. Naut. Words & Terms (ed. 2) 247 Parrel trucks, large wooden balls threaded on a rope parrel to prevent parrel gripping mast when hoisting or lowering. < as lemmas |
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