电抗线圈

This situation occurs because noise cancellation depends on the fact that the inductive reactance of the windings must be much larger than the impedance of the cable.

线圈的感应电抗必须远大于电缆阻抗，噪声抵消导致这个情形出现。

R where f = the frequency, Hz; L = the inductance, H; R = the dc resistance, X; and XL = the inductive reactance of the coil.

其中f =频率，赫兹；为L =电感艇与r =直流电阻，第十章；和XL =感应电抗线圈

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。