DPF failure symptoms mainly include filter body blocking due to scorification, and filtering function failure due to burnout or hardening crack, as shown in Figure 7.
DPF失效形式主要包括烧融而堵塞过滤体、烧漏、烧裂而导致过滤功能失效如图7所示。
Crack in neck of hollow shaft is a very serious malfunction, main cause of the crack include: foundry defect, centralized stress, quality problems of welding and heat treatment.
中空轴轴颈裂纹是水泥磨的严重故障。中空轴轴颈裂纹产生的原因主要有：铸造缺陷，应力集中，焊接和热处理质量问题等。
The main disease of the dike include: Seepage, crack, slip, cave, weak layer, collapse, pipe breach.
堤坝的主要病害有：渗漏、裂缝、滑坡、孔洞、软弱层、坍塌崩岸、涵管破裂。
The prototype observation items of the Puding RCC arch dam include stress and strain observation, temperature monitoring, observation of joints, crack and seepage pressure.
大坝的原型观测项目有应力应变观测、温度观测、渗流观测、接缝观测和裂缝观测。
The contents of research include: Make the weld property test for the X60 pipeline steel, as a result from it that is temperature before starting weld to prevent delay crack;
其研究内容包括：对X60管线钢进行了焊接性实验，得出野外焊接施工初始温度，从而预防冷裂纹的产生；
The contents of research include: Make the weld property test for the X60 pipeline steel, as a result from it that is temperature before starting weld to prevent delay crack;
其研究内容包括：对X60管线钢进行了焊接性实验，得出野外焊接施工初始温度，从而预防冷裂纹的产生；
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