To systematically study the effects of mineral admixtures such as slag, expanding agent on sulfate resistance of concrete, a series of concrete immersion test was carried out.
通过混凝土的抗硫酸盐浸泡试验，系统研究了矿渣、膨胀剂等矿物掺合料对混凝土抗硫酸盐侵蚀性能的影响。
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In teaching young kids English, I want to inspire a passion for learning in kids through a series of methods such as immersion English teaching environment, games, interactive teaching and TPR.
The Pyronics TF Packaged Immersion Tube Burner Series are designed to offer the equipment designer and user a completely pre-wired, pre-piped burner package for heating liquid process tanks.