英语词汇top riser怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

短语

1
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。
2
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。
3
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。

单词	top riser
释义	top riser 简明释义顶冒口网络释义 1 ?顶冒口顶冒口(top riser):顶冒口中的合金液位能较高，可以在重力作用下进行补缩，相对来说它的补缩能力较强。短语 1 open top riser 明冒口 2 top-riser 顶冒口 3 Top Tension Riser 立管 ; 顶部张紧立管双语例句 1 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。 2 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。 3 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。
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