颤痕

According to neural network control technology a new technology for the eliminating of self-excited oscillation in turning process is put forward.

仿真结果表明，该方法在消除残留振痕引起的车削再生颤振，提高车削稳定性方面具有特殊的作用。

The distribution of glacial-erosion traces on the roche moutonnee has fair regularity, that is to say the long-straight striations were often formed on the top of stoss side and the crescentic scars, crescentic wedges, chatter marks and shorted striations on the end of stoss side and striation of many groups on the flanks, which can show the condition of glacial division-flow.

迎冰面的顶部为长度大且平直的擦痕，尾部为新月型裂纹，新月型凿口，颤痕和较短的擦痕；侧部常有多组擦痕，它可指示冰川分流的情况。

"Chatter:a riblike marking on wood or metal, caused by vibration of a cutting tool."

颤痕：因切削工具的颤动而在木头或金属上留下的罗纹状痕迹。

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。