The asymptotic behaviour of a gas in an n-dimensional porous medium
The asymptotic behaviour of a gas in an n-dimensional porous medium
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n 维多孔介质中气体的渐近行为
DOI：
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发表时间：
1980
期刊：
影响因子：
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通讯作者：
S. Kamin
中科院分区：
文献类型：
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作者：
A. Friedman;S. Kamin
一种人体按摩装置，具有一个可转动地安装在左右手柄上的非柔性的、与人体接触的圆柱形滚轮，从而该装置可以在人体上滚动以产生按摩作用。手柄是圆柱形的，并且与身体接触的圆柱形辊具有相同的直径，从而允许手柄和圆柱形辊同时接触人体。手容易地在相同尺寸的滚筒和手柄之间来回滑动，以交替地制动滚筒并允许其滚动，从而间歇地拉伸皮肤。圆柱形辊由两个圆柱形的半部分组成，通过柔性轴彼此连接，使得半部分能够彼此独立地旋转。这种结构允许圆柱形辊围绕人体的轮廓转动。
A human body massaging apparatus has an inflexible, body contacting cylindrical roller, rotatably mounted on a left and a right handgrip, so that the apparatus may be rolled over a human body to produce a massaging action. The handgrips are cylindrical in shape and of the same diameter as the body contacting, cylindrical roller, permitting the handgrips and the cylindrical roller to contact the human body simultaneously. Hands are easily slid back and forth between the same size roller and handles for alternately braking the roller and permitting it to roll, thereby intermittently stretching the skin. A cylindrical roller is composed of two half sections of cylindrical shape, attached to each other by a flexible shaft so that the half sections are capable of rotating independently of each other. This construction allows the cylindrical roller to be turned around contours of the human body.