以下哪个是增强技术遵循的准则?
A: Restricting and hindering dislocation motion
renders a material harder and stronger.
B: Restricting
and hindering dislocation motion decreases the hardness of a material.
C: Restricting and hindering dislocation motion are
not related to the hardness of a material.
D: Restricting and hindering dislocation motion are
not related to the toughness of a material.
A: Restricting and hindering dislocation motion
renders a material harder and stronger.
B: Restricting
and hindering dislocation motion decreases the hardness of a material.
C: Restricting and hindering dislocation motion are
not related to the hardness of a material.
D: Restricting and hindering dislocation motion are
not related to the toughness of a material.
举一反三
- 以下哪个是增强技术遵循的准则? A: Restricting and hindering dislocation motion renders a material harder and stronger. B: Restricting and hindering dislocation motion decreases the hardness of a material. C: Restricting and hindering dislocation motion are not related to the hardness of a material. D: Restricting and hindering dislocation motion are not related to the toughness of a material.
- The stratification of parent material (heterogeneous parent material) has a more complex influence on the material migration and soil fertility, compared with homogeneous parent material. The stratification of parent material will be inherited to soil.
- Which of the following statements are correct? A: The greater the modulus, the stiffer the material. B: The stiffer the material, the higher the resistance of the material to deformation. C: The higher the magnitude of elastic modulus, the higher the magnitude of the inter-atomic bonding forces in a material. D: The higher the magnitude of elastic modulus, the lower the magnitude of the intermolecular bonding forces in a material.
- The main raw material of wood-based panels is wood or no-wood plant fiber material.
- A ferromagnetic material, which is hard to magnetize and demagnetize, could be used as a computer memory material.