通过实验，得到了SPF型平衡阀的流量与开度间的关系，绘制了理想流量特性曲线。
Through experiment, achieved the relation of the flux and the opening degree of the SPF balance valve, protracted the ideal flow characteristic curve.
CU7直线管、提升型结构压降最小，流量特性曲线平稳圆滑。
The straight line, poppet-type construction of the CU7 minimizes pressure drop and provides smooth flow characteristics.
干密度值较高时，土样处于密实状态，表现出剪胀特性，有效主应力比-应变曲线近于应变软化型；
When the dry density is relatively high, this dense specimen shows shear dilatation characteristics, and the effective principal stress ratio tends to be strain softening phenomenon.
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