modulus of water glass

例句：

1. 1.The engineer used a ruler to measure thelength of the beam.
   工程师用尺子测量了梁的长度。
2. 2. The modulus ofelasticity is an important factor in determiningthe strength of materials.
   弹性模量是决定材料强度的一个重要因素。
3. 3. Themodulus of elasticitycan be calculated using the formulaσ = E * (1/L) * d^3 /6 * D^2, whereσ is the stress, E isthe modulus of elasticity, Lis the length, d is the diameter, D is the diameter of the objectbeing tested.
   弹性模量的计算公式为σ = E * (1/L) * d^3 /6 * D^2，其中σ是应力，E是弹性模量，L是长度，d是直径，D是被测试物体的直径。