Similar words: dough, though, enough, witness, fitness, drought, roughly, through. Meaning: ['tʌfnɪs] 
n. 1. enduring strength and energy 2. the property of being big and strong 3. the elasticity and hardness of a metal object; its ability to absorb considerable energy before cracking 4. impressive difficulty.
n. 1. enduring strength and energy 2. the property of being big and strong 3. the elasticity and hardness of a metal object; its ability to absorb considerable energy before cracking 4. impressive difficulty. 
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91. But the addition of SM master alloy has some deleterious effect on the toughness of sintered steel.
92. This paper shows the results of a study of an intergranular fracture in bot low alloy steel castings, Poor ductility and low toughness are often associated with fracture mode.
93. So, on the premiss of good intensity, ADI advances the toughness and plasticity of the materials.
94. The extra-cryogenic impact toughness and influence factors of the high-Mn austenitic steel are studied by means of the Charpy V-notch impact test and the SEM fractured appearance analysis.
95. Load versus deflection is being recorded. Absorbed energy quantities are translated in toughness indices (USA) or an equivalent flexural strength (Japan, Europe).
96. The surface quality of Y2 frame and the percentage of end product can not be compatible, because the toughness and mobility of the moulding sand in clay sand are antagonistic each other.
97. The present invention belongs to the field of polymer material technology and is especially one kind of modified random styrene-maleic anhydride copolymer with improved toughness and strength.
98. In the article, we studied the effect of matrix toughness and stack sequence on in-plane shear properties of the composites reinforced with glass fiber, carbon fiber and hybrid fiber.
99. The fracture toughness of the bimetallic interfaces is lower than those of respective counterpart metals.
100. The yield strength, tensile ratio and toughness are major quality indexes of steel pipe ( board ).
101. The impregnated resin should be of high toughness and well permeant to glass fiber.
102. To develop the necessary coating adhesion to optimize the ballas layer strength, its fracture toughness and wear behavior versus a variety of materials seems a worthwhile new endeavor.
102. Sentencedict.com is a online sentence dictionary, on which you can find excellent sentences for a large number of words.
103. Vinylon fibre can improve the bending strength, fracture energy, fracture toughness and impact toughness.
104. He had developed his unusual toughness by working out daily at a gymnasium.
105. Stimulate the hair to be toughness, balance the perspire the sedum.
106. The cohesive strength of the fictitious crack generated by the sub-critical growth of main crack is an important factor affecting the size dependence of the fracture toughness of concrete.
107. Besides , it's feasible to crack mend when distortion is requested to use the right amount of 660 diluter which can increase toughness of the serosity .
108. The impact and toughness of unmodified cured epoxy resins are poor, which restrict its applications.
109. A Charpy test is usually much less expensive to perform than a fracture toughness characterization experiment.
110. RCR specimen maintained their integrity and exhibited a ductile failure under compression indicating that the toughness of concrete was improved by the incorporation of waste tire rubber.
111. The fracture toughness of lamellar microstructure is higher than that of equiaxial microstructure when deformed above the phase transition.
112. Two austempering heat treatments were applied to generate optimum toughness and optimum strength and hardness.
113. Such a structure achieves an optimum coupling of hardness with impact toughness.
114. The influence of phosphorus and grain size on yield strength and Charp V-notch toughness of low carbon steels have been investigated.
115. Two are in power today, and both are known for their toughness and combativeness: President Gloria Macapagal Arroyo in the Philippines and Prime Minister Sheikh Hasina in Bangladesh.
116. With adding liquid CTBN rubber in epoxy resin matrix, the toughness of epoxy resin matrix could be increased, and the adhesivity between epoxy resin matrix and steel-ball could be improved.
117. Results showed that the flexual strength and the flexual toughness index of UHPC become more than 2 times and 10 times respectively of those 0f the matrix concrete by the reinforcement of fibers.
118. The steel- polyacrylonitrile fiber has synergy on the splitting strength and toughness of concrete.
119. Fracture toughness against pressurised thermal shock, do you know what a pressurised thermal shock is?
120. CONCLUSION: The bending, torsion, compression and impulsion decrease in the osteoporotic models after ovariectomy, which indicates that the bone fiber strength and toughness reduce after osteoporosis.
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