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critical mass |
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critical mass: see chain reaction chain reaction, self-sustaining reaction that, once started, continues without further outside influence. Proper conditions for a chain reaction depend not only on various external factors, such as temperature, but also on the quantity and shape of the substance ..... Click the link for more information. . critical massMinimum amount of a given fissionable material necessary to achieve a self-sustaining nuclear chain reaction under specified conditions. Critical mass depends on several factors, including the kind of fissionable material used, its concentration and purity, and the composition and geometry of the surrounding reaction system.
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As in the molding area, all critical assembly steps are fully automated. The ability to provide these critical assembly related products is unique to Kulicke & Soffa, and allows us to develop system solutions to the new technology challenges inherent in assembling and packaging next-generation semiconductor devices. Derlan Aerospace Canada received a prestigious award as a "principal supplier" for GKN Westland Helicopters in 1997, recognizing the high level of quality control and complex machining of Derlan's titanium rotor heads, which are a critical assembly holding and rotating the main rotor blades of the Lynx helicopter. |
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