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GB/T 7690.3-2001玻璃纤维断裂力测定

作者：來源：发布日期： 2020.10.19

信息摘要：

GB/T 7690.3-2001玻璃纤维断裂力测定

電子式的拉力試驗機可完全滿足玻璃纖維紗試驗對控制和精度的要求。夾具一般采用纏繞夾具裝置，以保證對試樣的夾持。

玻璃纤维纱包括单纱、合股纱、缆纱、原丝、无捻粗纱等。国标GB/T 7690.3-2001规定了以卷装形式提供的玻璃纤维纱线断裂强力和断裂伸长的测定方法。适用于从卷装所取的直径小于2MM或线密度小于2000tex的玻璃纤维。也可以用于直径大于2MM或线密度大于2000tex的玻璃纤维纱线的测定。

通過拉力試驗機拉伸試樣至斷裂，測定出斷裂強力和斷裂伸長。必要時，可以測定規定負荷下的伸長或規定伸長下的負荷。

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The Curate, of course, had heard nothing about the Clockwork man's other performances; he had scarcely heeded the hints thrown out about the possibility of movement in other dimensions. It seemed to him, in the uncertain light of their surroundings, that the Clockwork man's right arm gradually disappeared into space. There was no arm there at all. Afterwards, he remembered a brief moment when the arm had begun to grow vague and transparent; it was moving very rapidly, in some direction, neither up nor down, nor this way or that, but along some shadowy plane. Then it went into nothing, evaporated from view. And just as suddenly, it swung back into the plane of the curate's vision, and the hand at the end of it grasped a silk hat. Good fitting is often not so much a question of skill as of the standard which a workman has fixed in his mind, and to which all that he does will more or less conform. 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