测定单根纱线的抗拉断裂强力和断裂伸长。

To measure tensile strength and breaking elongation of single yard.

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钢虽硬，但在强力作用下也会弯曲或断裂。

Hard as steel is, it will bend or break under the action of a strong force.

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钢虽硬，但在强力作用下也会弯曲或断裂。

Hard as steel is, it will bend or break under the action of a strong force.

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