Synonym: callosity, callousness, harshness, inclemency, insensibility, rigor, rigorousness, rigour, rigourousness, ruggedness, severeness, severity, stiffness, unfeelingness. Similar words: awkwardness, madness, sadness, kindness, wretchedness, harness, hard-pressed, wednesday. Meaning: ['hɑrdnɪs /'hɑː-] 
n. 1. the property of being rigid and resistant to pressure; not easily scratched; measured on Mohs scale 2. devoid of passion or feeling; hardheartedness 3. the quality of being difficult to do 4. excessive sternness.
n. 1. the property of being rigid and resistant to pressure; not easily scratched; measured on Mohs scale 2. devoid of passion or feeling; hardheartedness 3. the quality of being difficult to do 4. excessive sternness. 
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211. The result indicated that the optimum dispersant was FSJ-502, moreover, after adding the talc into the paint, the dryness, after-tack, hardness and corrosion resistance of the coating are improved.
212. By virtue of modern metallograph analyse technology, the size of grain, hardness and residual stress of bevel gear by closed-die cold forging is studied.
213. Proper hardness, enduringly abrasive ability, high efficiency of polishing, well precision.
214. The hardness of metals and hardness test has been summarized.
214. Sentencedict.com try its best to collect and build good sentences.
215. "The hardness of the enamel and dentin of the bioengineered tooth was equivalent to those of a natural adult tooth, " they wrote in response to questions from the media.
216. The results show that the hardness has relation to vanadium carbides boundary.
217. It was found that tensile strength, pendulum hardness of the latex film cast from hybrid emulsion increased and water resistance became better with increasing the content of MMA.
218. The hardness and inhumanity of the man was fast breaking up.
219. Adding the powder of whole wheat germ could obviously increase the hardness, gumminess and chewiness of the pork ham sausage, the mixed wheat germ ham sausage have a special flavour and good texture.
220. Electromagnetic testing and ultrasonic testing are the main points for materials hardness, hardness depth, crystallite size, limiting intensity etc.
221. The hardness and wear resistance of welded metal was tested using HR-150A Rockwell Hardness Tester and MM-200 Wear Testing Machine.
222. The hardness and abrasive property of the surface, and the anti-shrink efficiency of the treated wood samples, were all improved.
223. Both hardness and impact toughness of the granular pearlite are better than that of lamellar pearlite, but the latter has a better wear resistance.
224. Hence, the hardness of the tool and the degree to which it remains its hardness at high temperature are important in the selection of a cutting-tool material.
225. On the premise that the tensile strength and the end quenching hardness don ′t decrease too much, the impact value can be greatly increased by increasing chromium content in composition range.
226. Tensile strength and hardness of caoutchouc modified by cenosphere were studied in order to explore cenosphere composite materials and improve some properties of composite materials.
227. After sole pressing natural cooling for 10-15 mins to crease the hardness of counter and results in better effect of last slipping.
228. The styrene modified alkyd resin is featured by quick drying, high hardness and resistance to water.
229. At night, when all the windows are lit up, the hardness of the daytime is softened.
230. Transverse rupture strength, Rockwell A hardness, magnetic saturation induction and magnetic coercivity of samples sintered in vacuum or by sinter-HIP were measured.
231. B. Base Metals: Produce door hardware units of base metal indicated, fabricated by forming method indicated, using manufacturer's standard metal alloy, composition, temper, and hardness.
232. The hardness, surface morphology and adhesion were analyzed and examined respectively by micro - sclerometer , scanning electron microscope and lever style omnipotence intension test machine.
233. The exceptional tool performance of sintered carbides results from their very high hardness and high compressive strength.
234. Rubber has very good flexibility and is outspread. After sulfuration , it comes relevant hardness, velvet surface, obtain each quality standard of medicine rubber stopper.
235. Based on practices of turbine bolts hardness test, the factors influencing HL - hardness test results are discussed.
236. That machine applies to low hardness material comminution such as chemical industry , dyestuff pigment , coating material, pesticide, food, ceramics , metalloid ore broadly.
237. Regression analyses of the relations between strength and hardness of chrome-nickel steel are carried out, the relevant formulas of the regression relations are set up.
238. The exceptional tool performance of sintered carbides results from their very high hardness and compressive strength.
239. The practice of using antimony to increase hardness of heavy castings and improve quality of complicated castings was introduced.
240. The hardness was measured by the continuous stiffness measurement ( CSM ) technique of an instrumented - indentation testing ( IIT ) device.
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