查询词典 pointsmen

Objective To study the effects of occupational hazardous factors on pointsmen's health.

目的 了解职业危害因素对交通警察健康的影响。

Methods The health status of 380 local pointsmen working in field were compared with those of 253 working indoors.

对汕头市的外勤警380人，内勤警253人，进行了健康体检和健康调查分析。

Seeing this, the pointsmen reported,Attentions,there are cars drifting on the road.

路边上的交警看见了，马上报告说：注意注意，公路上有飙车。

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。