the air-free concrete is required for the construction of the high-rise building.

高層建筑的建造需要使用無(wú)氣混凝土。

we need to ensure that the concrete mix is air-free to achieve the desired compressive strength.

我們需要確?；炷粱旌衔锊缓諝?，以達(dá)到所需的抗壓強(qiáng)度。

the air-free concrete is produced by carefully controlling the mixing process to eliminate air bubbles.

無(wú)氣混凝土是通過(guò)仔細(xì)控制混合過(guò)程來(lái)消除氣泡而生產(chǎn)的。

the use of air-free concrete has resulted in a stronger and more durable foundation for the bridge.

使用無(wú)氣混凝土使得橋梁的基礎(chǔ)更加堅(jiān)固和耐久。