Using reliability assessment method, we can obtain proper assessment of hull longitudinal strength safety level.
采用可靠性评估的方法，对船体总纵强度的安全水平可作出合理的评价。
2
The composition of molten steel, cast speed and mould level changing are thought to be main reasons of causing surface longitudinal cracks by analyzing producing data.
对生产数据进行分析，认为钢水成分、拉速和结晶器液面波动等是造成连铸坯表面纵裂的主要原因。
3
A concrete gravity dam with 1 ~ 2 longitudinal seams and level keyways in seam surface was grouted when the concrete stays a stable temperature.