Results show that it is difficult to make cathodic protection on bare steel because of large current density, and that cathodic protection is suitable for coated steel.

试验结果表明，对裸钢采用阴极保护时，所需电流密度较大，实施难度较大；而对有涂层的钢则更宜采用阴极保护措施。

youdao

But it provides too small emission current density and gives a large gate current.

但不足之处是发射电流密度太小和有较大的栅极电流。

youdao

Technology cutting-edgeis without the current large density phenomenon, there is not the excessive thickeningin the sharp corners or edges, it does not need the grinding after treatment.

技术无尖端电流密度过大现象，在尖角或边缘突出部分没有过分的增厚，处理后不需要磨削加工。

youdao

Our ability to store electricity in batteries is improving, but current low energy density makes batteries an inefficient choice for large-scale storage.

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