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hardness ['hɑrdnɪs]
n. 坚硬, 困难, 严厉, 勇气
[化] 硬度
[医] 硬度, 硬性
- Their hardness was understood by the teacher.
他们的艰难得到老师的理解。 - I can't open the door with hardness of stone.
我不能打开那扇石门。 - Despite the hardness of his bed, he is soon sleeping soundly.
虽然床很硬，他还是很快地睡熟了。
hardness
[ noun ]
- the property of being rigid and resistant to pressure; not easily scratched; measured on Mohs scale
- a quality of water that contains dissolved mineral salts that prevent soap from lathering
- devoid of passion or feeling; hardheartedness
- the quality of being difficult to do
- excessive sternness
<noun.attribute>
<noun.attribute>
the costs of reducing hardness depend on the relative amounts of calcium and magnesium compounds that are present
<noun.attribute>
<noun.attribute>
he assigned a series of problems of increasing hardness
the ruggedness of his exams caused half the class to fail
<noun.attribute>
severity of character
the harshness of his punishment was inhuman
the rigors of boot camp
Hardness \Hard"ness\, n. [AS. heardness.]
1. The quality or state of being hard, literally or
figuratively.
The habit of authority also had given his manners
some peremptory hardness. --Sir W.
Scott.
2. (Min.) The cohesion of the particles on the surface of a
body, determined by its capacity to scratch another, or be
itself scratched; -- measured among minerals on a scale of
which diamond and talc form the extremes.
3. (Chem.) The peculiar quality exhibited by water which has
mineral salts dissolved in it. Such water forms an
insoluble compound with soap, and is hence unfit for
washing purposes.
Note: This quality is caused by the presence of calcium
carbonate, causing temporary hardness which can be
removed by boiling, or by calcium sulphate, causing
permanent hardness which can not be so removed, but may
be improved by the addition of sodium carbonate.
1. The quality or state of being hard, literally or
figuratively.
The habit of authority also had given his manners
some peremptory hardness. --Sir W.
Scott.
2. (Min.) The cohesion of the particles on the surface of a
body, determined by its capacity to scratch another, or be
itself scratched; -- measured among minerals on a scale of
which diamond and talc form the extremes.
3. (Chem.) The peculiar quality exhibited by water which has
mineral salts dissolved in it. Such water forms an
insoluble compound with soap, and is hence unfit for
washing purposes.
Note: This quality is caused by the presence of calcium
carbonate, causing temporary hardness which can be
removed by boiling, or by calcium sulphate, causing
permanent hardness which can not be so removed, but may
be improved by the addition of sodium carbonate.
- Diamond films are expected to have huge markets because the material holds records for hardness and ability to conduct heat, and it is highly corrosion-resistant.
- Eight to 10 percent of a small sample surveyed by the utilities last fall at the agency's request were below required specifications for tensile strength, hardness, resistance to stretching or chemical composition.
- It has unmatched hardness, is as slippery as Teflon, carries heat better than gold or copper, and can be made to conduct electricity.
- He has acquired a carapace of hardness I have not seen in him before.
- Even without the contrast of the Berlin Philharmonic, the orchestral sound would have an industrial-belt hardness and vigour.
- The maker of medical and healthcare products said its Starfire braces are made of sapphire, which the company said gives the braces hardness, transparency and purity all superior to other materials used in orthodontic braces, such as metal and plastics.
- The material's strength, hardness, flexibility and unusual magnetic properties could ultimately give it a range of industrial uses.
hardness
hardness ag(e)ing
hardness ageing
hardness aging
hardness Barcol
hardness change
hardness control
hardness conversion
hardness creep
hardness curve
hardness degree
hardness drop tester
hardness ga(u)ge
hardness gauge
hardness ions
hardness level
hardness limit
hardness measurement
hardness measuring ma...
hardness number
hardness number conve...
hardness of film
hardness of fruit
hardness of glaze sur...
hardness of grain
hardness of grease
hardness of pellets
hardness of pulp
hardness of rubber roll
hardness of timber
hardness of water
hardness of wood
hardness penetration
hardness point
hardness producing ion
hardness range
hardness ratio
hardness reducer
hardness resin
hardness rubber
hardness scale
hardness scale(degree)
hardness self-excitation
hardness sensor
hardness solidness
hardness test
hardness test(ing)
hardness tester
hardness testing
hardness testing machine
hardness transducer
hardness value
hardness-depth curve
hardness-testing auto...
hardness-testing device
hardnessl
Hardnester
hardometer
Hardon
hardon era
hardness ag(e)ing
hardness ageing
hardness aging
hardness Barcol
hardness change
hardness control
hardness conversion
hardness creep
hardness curve
hardness degree
hardness drop tester
hardness ga(u)ge
hardness gauge
hardness ions
hardness level
hardness limit
hardness measurement
hardness measuring ma...
hardness number
hardness number conve...
hardness of film
hardness of fruit
hardness of glaze sur...
hardness of grain
hardness of grease
hardness of pellets
hardness of pulp
hardness of rubber roll
hardness of timber
hardness of water
hardness of wood
hardness penetration
hardness point
hardness producing ion
hardness range
hardness ratio
hardness reducer
hardness resin
hardness rubber
hardness scale
hardness scale(degree)
hardness self-excitation
hardness sensor
hardness solidness
hardness test
hardness test(ing)
hardness tester
hardness testing
hardness testing machine
hardness transducer
hardness value
hardness-depth curve
hardness-testing auto...
hardness-testing device
hardnessl
Hardnester
hardometer
Hardon
hardon era
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中国词汇量第二的英语词典
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