论文部分内容阅读
我们地区土壤种类多,比阻相差悬殊,比阻最大达1～1.2公斤/厘米~2.为了适应这种条件,我们仿照铣床铣键槽的原
In our area, there are many kinds of soils, which are much different than the resistance, and the specific resistance is up to 1 ~ 1.2 kg / cm ~ 2. In order to adapt to this kind of conditions, we follow the original