即将过时
发表于 2025-3-21 17:19:15
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oracle
发表于 2025-3-21 21:21:29
P. M. Taylorduring crystal growth. Subsequent thermal treatment during solar cell manufacturing leads to its precipitation which degrades the lifetime of minority carriers in solar cell material and also the solar cell efficiency. Oxide precipitate nuclei are formed already during crystal cooling. A special for
吹牛需要艺术
发表于 2025-3-22 01:32:19
P. M. Taylor primarily driven by the need to reduce cost. The dominant wafering method is multi-wire sawing with a straight steel wire and an abrasive slurry consisting of polyethylene glycols (PEG) and SiC powders (loose abrasive sawing). Substantial cost reductions are possible with structured steel wires or
开花期女
发表于 2025-3-22 06:56:52
P. M. Taylord stream of silane and hydrogen. Silane-based fluidized-bed reactors potentially provide a lower cost method to produce polysilicon than the current Siemens reactors that dominate the silicon market. Production of silicon in a fluidized bed requires 80–90% less electrical energy than the currently f
绿州
发表于 2025-3-22 10:25:04
P. M. Taylore condition to maintain or even improve the wafer quality. This additional requirement becomes even more important because wafer and wire thickness will decrease in the future and the standard loose abrasive sawing technique will be replaced by the fixed abrasive sawing technique..The essential qual
insurgent
发表于 2025-3-22 16:23:35
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不透气
发表于 2025-3-22 17:53:52
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不可救药
发表于 2025-3-23 00:33:21
Introduction, have been prevalent throughout the ages. It was common practice, for example, to adorn mediaeval clock mechanisms with mechanical figures which would seemingly parade and strike the bells as the clock reached the hour. Even today such mechanisms attract many sightseers. However, they are essentiall
Confidential
发表于 2025-3-23 01:42:49
Kinematics and Dynamics,ucture which can be used, and the various forms of end effector which are suitable for holding the object or tool. The types of actuator which can be used to move each part of the structure are described in chapter 3.
障碍
发表于 2025-3-23 07:35:36
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