The failure cause of the tubing was studied by macro and micro analysis, physical and chemical properties testing, X-ray energy spectrum analysis and stimulated corrosion test.
通过宏观和微观分析、理化性能检验、X射线衍射和模拟试验，对腐蚀油管进行了失效分析。
In addition, according to the crushing strength and physical, chemical properties of manganese nodule, the testing method for crushing using toothed roll crusher is established.
同时根据锰结核的破碎强度和物理化学特性确定了用齿辊破碎方式进行破碎的实验方法。
Coil coating after baking, after rigorous testing physical and chemical properties to achieve high quality.
涂装烘烤后的钢卷，经过严格理化性能检验，达到品质优良。
Coil coating after baking, after rigorous testing physical and chemical properties to achieve high quality.
涂装烘烤后的钢卷，经过严格理化性能检验，达到品质优良。
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