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- Many experimental phenomena show that the primary Si content affects the primary crystal silicon distribution in hypereutectic Al-Si alloy functionally gradient matrial (FGM) prepared by centrifugal casting. 很多实验表明,Si含量不同导致离心法制备过共晶Al-Si合金梯度功能材料(FGM)中初晶硅分布内外侧不同。
- By means of XRD,SEM and other tools,the paper studies microstructures,shapes and mechanical properties of primary crystal and eutectic silicon of Al-Si alloy treated by P and RE complex modifications. 采用扫描电镜、X射线衍射、材料性能检测等实验手段对复合变质处理后的过共晶铝硅合金显微组织、形貌和力学性能进行了分析。
- By means of optical micrograph and other instruments, microstructures, shapes of primary crystal and eutectic silicon of Al-Si alloy treated by P and RE complex modifications are studied. 摘要采用光学显微镜等手段对复合变质处理后的过共晶铝硅合金显微组织、形貌进行了分析。
- A new two region crystal micro physical model is established.It is used for the primary crystallization of hypoeutectic casts whose thickness is less than the critical value. 提出一种新的两区域结晶,这种两区域模型与三区域模型结晶模型的区别在于:在铸件的一次结晶过程中,铸件断面上不同时出现固相、固液相、液相三区共存的区域状态。
- The results show that with increasing holding time, the shape coefficient of primary crystals first increases slightly, then decrease due to merge of grains and growth. 结果发现，初生晶粒的形状系数随着保温时间的延长，先是有所增大，然后由于晶粒的合并长大而下降；
- Formation of Globular Primary Crystal in Semi-Solid Gray Iron 半固态灰铸铁球状初晶的形成
- PRIMARY CRYSTAL SIZE OF SINTERED ALUMINA TESTED BY ABRACIVING METHOD 研磨法检测煅烧氧化铝的原晶粒度
- The disease is still in its primary stage. 这疾病仍然在初发阶段。
- Keywords Dynamic Recrystallization;Hot DUctility;Primary Crystal;Strain Rate; 动态再结晶;热塑性;一次晶体;应变速率;
- The little boy left primary school at eleven. 这个小男孩十一岁时小学毕业。
- Sure. We are friends since primary school. 当然，我们从小学就是朋友了。
- I started primary school when I was 5 years old. 我五岁时开始读小学。
- A primary cause of Tom's failure is his laziness. 懒惰是汤姆失败的主要原因之一。
- Primary school teachers use a lot of visual aids. 小学教师使用大量的视觉教具。
- Love and hatred are primary emotions. 爱和恨是基本的情感。
- The Democratic primary was held this month. 民主党候选人初选於本月举行。
- Primary education comes under the umbrella of local government. 小学教育受地方政府的保护。
- He only accepted the primary education off and on in his childhood. 他小时候只断断续续地接受过初等教育。
- The primary reason for advertising is to sell more goods. 做广告的根本目的是要多出售货物。
- Collins was nosed out by his opponent in the primary. 柯林斯在初选中就被他的对手击败了。
- 今日热词
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- 深远海浮式风电平台 - deep-sea floating wind power platform
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- 京雄高速公路 - Beijing-Xiongan expressway
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- 农业及相关产业增加值 - the added value of agriculture and related industries
