单词 | Block and tackle |
例句 | 1 The ropes were tensioned using block and tackle. 2 A block and tackle is needed to lift that heavy machine. 3 Block and tackle: Combination of pulleys with rope or cable, commonly used to augment pulling force. 4 I finally hoisted him up with a block and tackle. 5 The fence is then strained fairly tight and is ready to load, the block and tackle being left in place. 6 Raised, lowered, or positioned equipment, tools, and materials for installation or use using hoist, handline , or block and tackle. 7 Hoisting mechanism including electric motor, brake, reduction gear, reel and block and tackle. |
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