杂交工作者

Using male sterile make crossbreed is the best way of hybrid seed production,and have achieved some success,but in seed yield and production of three-line there are still many problems and shortcomings,in particular, In China,the male sterile technology is still in the preliminary study stage.

采用雄性不育系生产杂交种是种子生产中最好的方法，一直受到苜蓿育种工作者的重视，并取得了一些成绩，但在种子产量和三系配套生产中还存在很多问题和不足，特别在我国，不育系杂交制种技术还处于初步研究阶段。

Such notable professionals as John Rivers hybridized various tree fruits, and introduced superior clones from France and elsewhere.

著名的专业工作者如John Rivers对各种果树进行了杂交，并从法国和其他地方引进优良的无性系。

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。