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。

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Conclusions: the results suggest that angiostatin, which can attenuate the activity of MSC, might play a role in the progression of HF.

结论：这个结果提示能减弱间充质干细胞活性的血管他丁可能在心力衰竭的病程中起到作用。

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All patients had either a recent hospitalization for HF or corroborative evidence of HF, such as pulmonary congestion or left-ventricular hypertrophy.

所有患者或有近期因心衰入院史或者有确定心衰证据，例如肺淤血或左室肥大。

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To help ensure a creative moment is never missed, the VIXIA HF G20 camcorder offers Pre-Record, a feature that allows users to automatically capture three seconds of footage before they press the record button.

ENGADGET: Canon's latest VIXIA camcorders stream and share with your mobile device

The new VIXIA HF R-series camcorders feature a new easy-to-use 3.0-inch capacitive touch panel screen for intuitive functionality.

ENGADGET: Canon's latest VIXIA camcorders stream and share with your mobile device

All of the new VIXIA HF R-series camcorders offer a higher capacity battery, nearly doubling the recording length over previous models.

ENGADGET: Canon's latest VIXIA camcorders stream and share with your mobile device