定点取样：增加了观测的精确性及可以被记录的行为。
Point sampling Increase the accuracy of observation and number of behaviors that can be recorded.
定点取样：在一个团体中一次仅有一个个体的行为被记录。
Point sampling The behavior of just one individual in a group at a time is recorded.
通过五点取样法，对病虫害进行分级和定点定株调查。
The investigation was made by sampling in five locations for diseases and pests.
通过五点取样法，对病虫害进行分级和定点定株调查。
The investigation was made by sampling in five locations for diseases and pests.
应用推荐