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B&H has been the USA’s premier photography store for over 50 years. As an authorized seller of Canon, Fuji, Nikon, Olympus, Panasonic, Sony and more, we are committed to providing the best camera gear along with superior knowledge, prices, and shipping.

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2019年8月14日 · Bonferroni法和Benjamini & Hochberg法（BH法） 这两种方法可以矫正各次检验的P值，用矫正后的P值与既定的α进行统计推断以保证总的一类错误概率不大于α。 （实际上原本的方法是调整各检验的α值，我们这里介绍的是与之等价的矫正P值的方法）

2020年2月14日 · The Housing Board Haryana came into existence during the year 1971 in pursuance of the Haryana Housing Board Act (Act No. 20 of 1971). The Act was published in the State Government's Extraordinary Gazette of May 18, 1971.

柱钢筋的h边：指的是柱子的纵边（y边）。 （b*h）900*900：指的是这种等边矩形柱情况那边都可以的bh的。 详细介绍： 2c25是柱子一边脚处，2c20 是b一边中间配筋，2c20是h一边配筋，两侧加起来共4根25的放在柱子4脚处，b，h边各配4根20，箍筋为c10间距200，为4支箍配 ...

最大磁能积(BH)max 代表了磁铁两磁极空间所建立的磁能量密度，即气隙单位体积的静磁能量，它是B与H乘积的最大值（单位kJ/m3或GOe），它的大小直接表明了磁体性能的高低。

焊接H型钢是将厚度合适的带钢裁成合适的宽度，在连续式焊接机组上将翼缘和腹板焊接在一起。 焊接H型钢有金属消耗大、不易保证产品性能均匀、尺寸规格受限制等缺点。 因此，H型钢以轧制方法生产为主。 在现代化的 轧钢 生产中，使用万能轧机轧制H型钢。 H型钢的腹板在上下水平辊之间进行轧制，翼缘则在水平辊侧面和立辊之间同时轧制成形。 由于仅用万能轧机尚不能对翼缘边端施以压下，这样就需要在万能机架后设置轧边端机，俗称轧边机，以便对翼缘边端给予压下 …

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B&H has been the USA’s premier photography store for over 50 years. As an authorized seller of Canon, Fuji, Nikon, Olympus, Panasonic, Sony and more, we are committed to providing the best camera gear along with superior knowledge, prices, and shipping.