硬度的英文：
hardness

参考例句：
  • Indentation methods of hardness testing comprise two principal groups
    压痕法测定硬度包括两大类。
  • The softer rock wears away.
    硬度较低的石头磨光滑了。
  • degree of hardness and elasticity of a tempered meta
    （金属回火后的）硬度和弹性.
  • Once a satisfactory system of lubrication has been secured the hardness of the interacting elements becomes critical.
    一旦获得了满意的润滑系统，相互作用的元件的硬度就成为紧要之事。
  • A moderately hard variety of pewter.
    白?中等硬度的白?
  • Pencils are graded according to softness.
    铅笔根据硬度分类。
  • With regard to hardness, the diamond is in a class by itself.
    讲硬度，金刚钻是独一无二的。
  • The temper of steel is higher than that of aluminium.
    钢的硬度比铝高。
  • Minerals usually differ in hardness.
    矿物的硬度往往不一样。
  • Cone imprint
    (硬度试验器)锥印痕
hardness是什么意思：
n. 坚硬；困难；冷酷
  • It is hard to conclude.
    这很难断定。
  • It is blowing hard.
    风刮得很大。
  • It was sleeting hard.
    雨雪霏霏。
  • To bear hard upon;press.
    使痛苦不堪对某人施加困难；逼迫
  • press hard upon
    进逼|压迫|穷追

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