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1)  head clasp
网头扣环
2)  Turn down
扣头
1.
Turn down Problem Resolution during X80 Plate Coil Rolling on Steckel Mill;
炉卷轧机轧制X80管线钢钢卷扣头问题的解决
3)  P.V.C. Coated Chain Link Fence
扣网
4)  retaining ring
扣环
1.
The method and its result of adding the retaining ring on wheel with the wheel hub not removed;
不退轮箍加装扣环的方法及效果
2.
The feasibility and the technic procedure of adding retaining ring on the Namibiya locomotive wheel are described.
介绍了出口纳米比亚机车轮箍加装扣环的可行性和工艺试验过程,指出扣环热定型工艺的方法是可行的。
3.
Because the assembly locomotive wheel which is widely used in our country may cause the digression and subversion accident because of the rim relaxation, which badly affects the safety of the railage, this article brings forward the method that adds a safety retaining ring to the rim of the assembly locomotive wheel, which can effectively prevent the serious accident such as locomotive.
针对我国机车广泛采用的组装式机车轮对,可能因轮箍弛缓造成的机车脱轨事故、颠覆,影响铁路运输安全的问题,本文提出给组装式机车轮对轮箍加装安全扣环。
5)  coupling collar
扣环
1.
Modal analysis of locomotive wheelset equipped with coupling collar;
机车轮对加装扣环后的模态分析
2.
For the purpose of preventing against relaxation of train wheels, Zhengzhou railway station brought forward the project of equipping coupling collar on train wheels, which could prevent against the serious accident after putting on practice.
为了防止内燃机车轮箍弛缓造成的机车脱轨事故,郑州铁路局机务处提出了给组装式机车轮对轮箍加装扣环的方案。
6)  buckle [英]['bʌkl]  [美]['bʌkḷ]
环扣
补充资料:毕扣扣灵碱
分子式:
CAS号:

性质:又称毕扣扣灵(碱),荷包牡丹碱。天然存在的是右旋体。细长片状结晶(由氯仿-甲醇中结晶)。熔点215℃。也有报道熔点177℃。旋光度+130.5°(由氯仿中结晶),pKa4.84。溶于苯、氯仿、醋酸乙酯,微溶于乙醇和乙醚;无色柱状棱晶(由甲醇中结晶),熔点195℃,旋光度+123°(c=3.58,氯仿)。易溶于氯仿,不易溶于乙醚、丙酮及乙醇中,能溶于热的苛性碱中。存在于罂粟科植物土延胡(Corydalishumosa Migo)的块茎中,化学合成可得到其外消旋体。具有兴奋子宫作用。具有强烈的致惊厥作用,且发作快、持续时间短,有可能用作癫痫的诊断用药。

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