Doubling hf-current results in a doubling of current density and a fourfold heat provided that the area of effective contact between the tissue ang the electrode remains constant.

如果人体组织和电极之间的有效接触面积保持不变，那么高频电流强度扩大一倍将会使电流密度增大一倍，并产生四倍的热量。

youdao

Bacterial density, surface contact and physiological signals are stimulating factors of swarming motility.

菌细胞密度、表面接触和生理学信号均可成为群集运动的刺激因素。

youdao

Parts are mechanically strong and have a high contact density.

部件是机械强度高，并具有高接触密度。

youdao