validness

The vectorial angle method is employed to evaluate the validness of every drill-down operation.

本文采用向量夹角法评估下钻操作的有效性,并给出了对应的高效下钻路径裁剪算法.

Meanwhile, I put forward my position in the independence, way of commitment, scope of compensation and of treaty-making errors responsibility as well as it in the change, dissolution and validness of contract.

其中，对缔约过失责任的独立性、责任承担方式、赔偿范围和合同变更、解除、有效情况下的缔约过失责任提出了自己看法；

Conclusions: The traditional Chinese medicine extracting machine is efficacious on the temperature of 115 ℃ and under the pressure of 0.7 kg · cm-2. The decoction validness is high. It is suitable for clinical use.

结论：中药煎药机在115℃，0.7kg·cm-2压力下煎煮效果好，煎出率高，适合临床用药。