dimensionless unit

Dimensionless Quantity Method, Natural Unit Method, Characteristic Quantity

无量纲化自然单位法特征量

Dimensionless quantities in physics are those that require no unit.

物理学中无量纲的量就是不需要单位的量.

Secondly, based on the discussion of condition of sediment incipient motion, the dimensionless unit stream power at sediment incipient motion is put up, so that the theory of sediment incipient motion become more integrated.

二是在对泥沙起动条件讨论的基础上，建立了泥沙起动的无因次临界单位水流功率，进一步完善了泥沙起动的有关理论；

The unit one is SI unit of quantities of dimension one ( dimensionless quantities), and it is also SI unit of numerical values. The unit one differs greatly from other units in SI in some respects.

单位一是量钢一的量（无量纲量）的SI单位，也是计数量的SI单位，它在某些方面与SI中的其他单位具有不同之处。