Precast pile driving test is performed to investigate its possibility in gravel pile composite foundation with settlingtube.
为了研究在沉管碎石桩复合地基场地中沉入预制桩的可能性，进行了预制桩沉桩试验。
2
The application of multi-tangential firing technology to settling the high temperature corrosion of water wall tube of boiler is introduced in detail.
详细介绍了多切圆燃烧技术在解决锅炉水冷壁高温腐蚀中的应用。
3
Reasons of high efficiency dedusting and no settling dust and no abra-sion at the throat inlet of the system under the condition of no water With the double-Venturi Tube washing process are presented.