There is abnormal bottom shrinkage in Zn Al alloy castings and top riser has little effect on them.
锌铝系合金铸造时出现反常的底部缩孔，而用一般上置式冒口对此类缩孔的补缩效果甚微。
The top riser vent with big mesh size has excellent ventilation. It also effectively guard against flies.
上方大网目透气网孔，通透气佳，即可有效预防苍蝇入侵。
In accordance with proportional solidification principle and limited feeding method, a series of top riser size is recommended to heavy castings.
本文根据均衡凝固原则、有限补缩的方法，推荐了厚大铸铁件的顶冒口尺寸系列。
Shares in ARM were up 3.1 percent at 399.7pence by 0817 GMT, the top riser in the FTSE 100 index (.FTSE), and setting aeight-year high for the second consecutive day.
截止格林威治标准时间0817，ARM股票上扬3%，涨399.7便士，为伦敦金融时报100指数涨幅最大的股票，并连续第二天创八年新高。
When the rig sank, the riser broke near the top while remaining attached to the blowout preventer at the bottom.
当钻井平台下沉时，立管在顶部附近的地方断裂，同时另一端仍与底部的防喷器相连。
When the rig sank, the riser broke near the top while remaining attached to the blowout preventer at the bottom, bending itself like a pretzel in its subsequent collapse.
当钻井下沉时，海底立管在顶部附近破裂，另一端还连在防喷阀上。 在随后的倒塌中，它像脆饼一样弯曲。
The top kill experience seems to have suggested to the company that the riser is not in fact holding back the oil very much; and besides, the other options have not worked out.
封顶的经历似乎已向英国石油公司表明：实际上，这根立管根本没有控制住漏油；并且除此以外，其他的补救选择也于事无补。
Cutting through the riser had been seen as a riskier strategy than the top kill, which is why it wasn't tried before.
在人们看来：同“封顶”相比，切断旧立管是一项更具有风险的策略，这就是为什么之前不愿尝试的原因。
The effects of various factors, such as top pre-tension, inner fluid density, current velocity profile, outer diameter and riser wall thickness on VIV-induced fatigue damage in the …
结果显示立管顶部预张力、管外流速分布、立管外径对疲劳损伤的影响非常明显，而管内流体密度和立管壁厚因其变化范围有限，对疲劳损伤的影响没有上述三个参数显著。
Nonlinear dynamics response of deep-water production top tensioned riser under three different moving conditions is calculated using finite element analysis software.
通过实例对各条件下顶张式立管时域动态响应特性作了比较。
The first potential solution would be to use conventional rigid metal piping typically applied as a steel catenary riser (SCR) or a top tensioned vertical riser system.
第一个是传统的刚性金属管柱，通常作为钢悬链线立管（SCR）或顶部张紧立管系统。
Usually, the top of the riser is so remote to the source of the problem, the unit never has an opportunity to perform its job.
立管的顶部离水锤发生的地点太远，使得它没有机会发挥效用。
The drilling riser's axial load effect on its mechanics in deep water is obvious, so, in practice, the top tensile load of drilling riser must be kept highly enough to a…
海洋深水钻井隔水管的轴向载荷对其力学特性有显著的影响，因此，在实际钻井作业过程中，隔水管顶部应保持足够的张力，避免隔水管处于受压状态。
The drilling riser's axial load effect on its mechanics in deep water is obvious, so, in practice, the top tensile load of drilling riser must be kept highly enough to a…
海洋深水钻井隔水管的轴向载荷对其力学特性有显著的影响，因此，在实际钻井作业过程中，隔水管顶部应保持足够的张力，避免隔水管处于受压状态。
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