用自行设计的喷丝板，在单孔纺丝机上纺得了中空沥青纤维，文中讨论了这种喷丝板的设计原理。
With a special made spinnerette, hollow pitch fibers were welt and spun, the basic design principals of this spinnerette were discussed in this work.
设计的模板是单孔的。
分析了U形管管径、单孔内u形管数量及热泵机组设计进水温度对换热器换热效果的影响。
Analyses the effect of U-tube diameter, tube quantity in each hole, and the design inlet water temperature of a heat pump unit on the heat exchange capability.
利用SHOT PLAN软件进行爆破网路优化设计，实现了单孔单网路的可靠起爆。
Using SHOTPLAN software for optimal design of blasting network, reliable initiation of the network for single hole is realized.
在分析汴京虹桥的基础上，将叠梁拱桥扩充到钢筋混凝土结构和钢管结构，并结合实例进一步对单孔叠梁拱桥的构造、设计、计算和施工作了研。
The reinforced concrete structure and steel tubular structure are included into the laminated beam arch bridges on the basis of analysis of Bianjing Rainbow Bridge.
在分析汴京虹桥的基础上，将叠梁拱桥扩充到钢筋混凝土结构和钢管结构，并结合实例进一步对单孔叠梁拱桥的构造、设计、计算和施工作了研。
The reinforced concrete structure and steel tubular structure are included into the laminated beam arch bridges on the basis of analysis of Bianjing Rainbow Bridge.
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