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1·which is dimensionless, we call that strain.

它是无量纲的，我们称之为拉力。

2·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。

3·This is a dimensionless number because it's length divided by length.

这儿没有量纲，因为是长度除以长度。

4·D index is also called formation drillability index (dimensionless).

指数也称地层可钻性指数(无量钢)。

5·The physical meaning of dimensionless numbers cannot usually be formulated clearly.

无因次数的物体意义一般不能清楚地用公式表达。

6·The physical process observed in within a duration less than 0.07 dimensionless time.

所观察到的过程发生在无量纲时间<0.07的范围内。

7·And so this dimensionless number is very transparent, and we will show you some examples.

这个无因次数,很清楚,我将举几个例子。

8·Both natural unit and dimensionless transformation are usual methods used in scientific research.

采用自然单位和无量纲变换都是科研上常用的方法。

9·The following is the equation for linear flow with skin, at constant rate, in dimensionless form.

这句话的意思是，在稳定流动的前提下，包含表皮因子的线性流方程的无因次形式。

10·The influences of dimensionless permeability modulus and skin factor on pressure response are discussed.

讨论了无因次渗透率模数和表皮系数对压力响应的影响。

(1)dimensionless parameter无量纲参数；无维参数

(1)dimensionless number无因次数；无量纲数