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Starting with wide angle lenses and naturally progressing toward the telephoto end of Pentax Lens' lineup, here we go...从广角镜头开始，按宾得镜头的阵容朝长焦镜头为止，好了，我们开始吧…15mm K15/3.5 is a rectilinear lens, which is thought to have the same optical design as its SMCT ...
2b. In this experiment, the time of the training session was shortened so a weak training protocol was used to yield good or poor learners. The preference scores in the simultaneous choice test (during 120 s) of the good learners were over 80 s in the test for imprinting, and those...
showing that the period of 11 is two, and that the periods of 7 and 13 are both six. Samuel Yates defined a unique-prime (or unique-period prime, see references [1,2 and 3]) to be a prime which has a period that it shares with no other prime. For example: 3, 11, 37 and...
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After 4 h incubation with P-TEFb, the consensus CTD substrate showed up to three phosphorylations corresponding to the three hepta-repeats provided as indicated by mass increases (Fig. 2b). Intriguingly, we found that P-TEFb is unable to phosphorylate a CTD substrate that contained complete ...