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Mean time to repair (MTTR) is a basic measure of the maintainability of repairable items. It represents the average time required to repair a failed component or device. [ 1 ] Expressed mathematically, it is the total corrective maintenance time for failures divided by the total number of corrective maintenance actions for failures during a ...
1983 Introduction of the Modular system, with the Mobil, Modular, and Exclusive boards and MM I module. 1984 with Richard Lang and his Psion chess (Winner of World Microcomputer Chess Championship 1984 in Glasgow) began a long series of World Championship successes. 1985 introduction of Lang's first Mephisto module, the Amsterdam 68000
The ultimate tensile strength of a material is an intensive property; therefore its value does not depend on the size of the test specimen.However, depending on the material, it may be dependent on other factors, such as the preparation of the specimen, the presence or otherwise of surface defects, and the temperature of the test environment and material.
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A spokesperson for the Carter Center said the 100-year-old 39th president, who has been in hospice care for the past two years, will not be attending because of his health, but otherwise he would ...
Ectopic and miscarriage. For those who do manage to conceive, things can still go wrong. After an egg is fertilised, it should implant into the lining of the womb.
For example, a Type 304 stainless steel has a 0.2% proof strength in the region of 280 MPa (41 ksi), a 22%Cr duplex stainless steel a minimum 0.2% proof strength of some 450 MPa (65 ksi) and a superduplex grade a minimum of 550 MPa (80 ksi).
He discovered a ferrous alloy with 25-27% Chromium that "was the first of the high-chromium alloys that became known as heat-resisting stainless steel." [ 7 ] Ferritic stainless steels were discovered early but it was only in the 1980s that the conditions were met for their growth: