positive control造句

1、This control hypothesis does not imply that debt issues will always have positive control effects.
这些关于控制的假说并不意味着，债务这件事并不总是有积极的控制效果。

2、Results The recovery rates of each positive control and diluent control were higher than 70%.
结果各试验组阳性对照菌的回收率和稀释剂对照组的回收率均达到70%以上。

3、Therefore, the positive control of obesity are extremely important issue in present and future.
因此，对于肥胖症的积极防治，是目前以及未来都极为重要的课题。