混凝土双向板的英文：
two-way reinforced(or prestressed)concrete slab
num. 二，两个
n. 两个人
adj. 两个的
Knit two, purl two.
两针朝下，两针朝上。
the better of the two
两者中的更好者
What does two and two make?
2加2等于几？
adj. 加固的，加强的
v. reinforce的过去式和过去分词
The designer chooses the layout of reinforcement.
设计者选择钢筋布局。
Will you take measures to reinforce them?
有加固措施吗？
They had to reinforce the center.
他们必须加强中央的权威。
adj.
预应力的（混凝土）
Additional concentric prestressing was required in the pier
墩内要求另加集中压力。
The dimensions or prestressing force and eccentricity require modification
尺寸或预加力和偏心需要修改。
The prestressing influence coefficients depend on the geometry of the concrete structure only
预应力影响系数仅取决于混凝土结构的几何形状。