求翻译：此法是一个应用较广的传统的加热方法，在油槽距底部 50 至 70mm 处设置金属网，轴承就置于网上，大的轴承还要用钩子吊起来。轴承是不适宜直接的放于槽底的，以防止接触槽底的轴承的部位局部受热温度过高，或是槽底沉淀的污物进入到轴承中。用油槽加热法的注意要点如下：应该使用无腐蚀性的热安定性好的矿物油，最好是要使用变压器油，油和容器都应该保持较好的清洁。油槽的容量应和被加热的轴承的大小与油量而定，如果容器太小的话，在连续的操作中，一放入轴承油温就会很快的下降，效果就会不好。是什么意思？

This method is a method of heating a wider application of traditional, at the bottom tanks from 50 to 70mm set up a metal mesh, bearings placed online, large bearings to hook hanging up. Bearings are not suitable for directly placed in the tank bottom, to prevent contact tank bottom bearing parts of local heating temperature is too high, or bottom in the sedimentation of dirt into the bearing. Notes for oil tank heating method is as follows: should I use a non-corrosive heat stability of good mineral oil, it is best to use transformer oil, oil and container should maintain a good cleaning. Tank size of bearing capacity of ECHO are heated with oil, but if the container is too small, in continuous operation, a place bearing oil temperature will drop soon, the effect would be bad.