top-ring groove

The idling loss of the flywheel energy storage system supported by the spiral groove cone bearings of various cone top radius was measured at a number of rotational speeds, and the measurement results are consistent with theoretical estimates.

在多个转速下测定了不同锥顶半径螺旋槽轴承支撑的飞轮储能试验系统的空载损耗功率，测试结果与理论预计一致。

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You've in the groove on the top of the world?

站在世界的顶端呼风唤雨？

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A groove is arranged on the top of the outer shell, and is used for installing the power supply and the controller between the outer shell and the thermal insulation layer.

隔热层紧贴在外壳的内侧面上，其顶部有一凹槽，用于在外壳和隔热层之间安装电源和控制器；

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The special feature of the new testing method is that a cake-like sand test piece with V-shape groove on its surface is heated from bottom to top in a new-designed high temperature shock heating furnace.

新试验方法的特点是采用表面有V形沟槽的圆饼形型砂试件，在激热试验炉中受到自下而上的高温烘烤。

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