| 释义 |
1 ?密度 重密度（double-density）光盘技术。Sony主管表示，
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So, it's one over the area times the double integral of xdA, well, possibly with the density, 1 but here I'm thinking uniform density one. 那么就是在这个区域的对xdA的二重积分，当然可能和密度有关系，但在这认为密度均为。 - 2
And mass will be double or triple integral, depending on how many dimensions you have, dV of whatever density function you have, dA or dV. 计算质量可看成二重或三重积分，这取决于空间维数，取决于密度函数，dA还是。 - 3
Samsung has announced the world's highest density DRAM chip, a 4GB DDR3 module, which is manufactured using a 50nm technology and is double the size of previously available DDR3 chips. 三星宣布了世界上密度最高的DRAM芯片，4GB DDR3模块，以50纳米技术制造，为现有DDR3芯片容量的2倍。
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