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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61. With respect to strength and toughness, chemistry and metallograph, the HIC performance of welds was analysed.
62. The effects of the macrostructure of tyre steel and continuous-casting temperature on hydrogen flaking and fracture toughness, K_(IQ), have been investigated.
63. The strength, toughness and surface hardness of medium Manganese austenitic steel have been increased greatly by casting surface alloying and complex modification.
64. Unsaturated polyester(UP) crosslinked by styrene has poor toughness. In this paper, diallyl phthalate (DAP) was used as co-crosslinking agent with styrene for toughening UP.
65. The temperature dependence of impact fracture toughness of phenolphthalein polyether ketone(PEK-C) was studied by using an instrumented impact tester.
66. Their fracture toughness and hardness were determined with Vicker's indentation test machine.
67. Huolong 1050/1260 Ceramic Fiber Board have many typical characteristics, such as exact measurement, excellent toughness, excellent heat preservation and can be cut discretional.
68. Chromium also tends to refine the grain structure of steel, thereby increasing its toughness.
69. Many of Thatcher's colleagues believe that the experience of being Prime Minister will temper her Iron Lady toughness.
70. Thus it is affirmed that the combination of the two materials are matchable and that the strength and fracture toughness of alumina-silicate ceramic matrix have been greatly improved.
71. POE-g-MAH obviously improved the toughness and strength of PP/PA6 blending system due to its superior compatibilization.
72. Good toughness and wear resistance, suitable for low speed cutting allowing a big rake angle, ensuring the sharpness of the edges[Sentence dictionary], bearing a heavy cutting force and achieving good surface finish.
73. Impact testing is used to measure the toughness of a material, corresponding to the energy necessary to cause fracture under shock loading.
74. The high strength, high toughness, high fatigue strength, and unique wear resistance ADI offer design engineer great potential for casting design.
75. The fracture toughness KIC of TiAlN coating has been measured by Weishi indenter indentor and the appearance of impress has also been observed by SEM.
76. Characteristic: High open area, good toughness, elasticity and precise plate making etc. , Used in printing fine line, pattern, geometrical design, half tone, etc for rotary printing machine.
77. To improve the toughness and the ductility of the glutinous rice paper product, some factory illegally add PVA to glutinous rice paper.
78. Only minds of extraordinary toughness and originality could resist such a torrent of suggestion.
79. Therefore, the content of low carbon martensite and volume fraction of undissolved carbide in the structure hardened files can he increased and their toughness and working life have bee...
80. He was a soft-spoken, modest man whose demeanor disguised a surprising toughness.
81. Epoxy resin is a kind of thermosetting resin with excellent general performances, but its toughness is not enough.
82. It is effective to supply moisture, improve hair toughness, reduce the furcal and cracking phenomena and straighten hair.
83. In order to improve the shock toughness of friction welding joint of oil drilling pipe, spray quenching is used as the measure of heat treatment after friction welding.
84. Remember, Herbert Hoover didn't have a problem making unpleasant decisions: he had the courage and toughness to slash spending and raise taxes in the face of the Great Depression.
85. It both dilution, toughness, soft replacement by multi - functional epoxy resin.
86. A 45 % glass reinforced, lubricated liquid crystal polymer resin with improved toughness.
87. The theory was that great nations start out tough-minded and energetic. Toughness and energy lead to wealth and power.
88. This damage will be lethal if Caldera Hellion hasn't devoured any creatures and its toughness hasn't been increased by any other means.
89. Abraham proved his toughness in his 2006 fight against Miranda, who broke the then-titleholder's jaw in the fourth round.
90. At neutral, oxidizing atmosphere, the long-term use can still maintain good tensile strength, toughness and fiber structure.
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