背兜

This new rule affects 18 product categories: full-size cribs and nonfull-size cribs; toddler beds; high chairs, booster chairs, and hook-on chairs; bath seats; gates and other enclosures for confining a child; play yards; stationary activity centers; infant carriers; strollers; walkers; swings; bassinets and cradles; children's folding chairs; changing tables; infant bouncers; infant bathtubs; portable toddler bed rails; and infant slings.

新规则影响的范围包括18类婴幼儿产品：全尺寸婴儿床和非全尺寸婴儿床、幼儿床、高脚椅、钩接式座椅、浴凳、防护儿童的防护门或围栏、儿童围栏床、儿童固定活动设施、婴儿背兜、童车、婴儿学步车、秋千、婴儿提篮和摇篮、婴儿折叠椅、尿布台、婴儿浴盆、便携式婴儿围栏床以及婴儿背带。

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。