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    1. strength is the ability of a metal to as tensile strength, bending strength, compressive strength, torsional strength, shear strength and fatigue strength.
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    2. Strength properties are commonly referred to as tensile strength, bending strength, compressive strength, torsional strength, shear strength and fatigue strength.
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    3. The principal ten-sile strength theory is combined with the shear-friction strength theory, so that a new strength theory, tensile-friction strength theory, is formed.
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    4. In the mechanical property, the composite fabric " s strength of tensile strength , tearing strength and bursting strength are all much larger than that of staple fabric."
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    5. The experiments included compressive strength, flexural strength, shear strength of sand grouts, stability and fluidity of net grouts.
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