1) βcrystallizer
β型晶体
2) ultra-β PNP transistor
PNP型超β晶体管
1.
The design makes the ultra-β PNP transistors work in the low Uce,low Ic1 micro-power state,and takes choice of low-noise measures such as resistive and capacitive components,and then the corresponding circuit is introduced.
对于一款为低阻抗信号源设计用分立元件组成的前置放大器的低噪声设计要点作了较为详细的阐述,设计据级联放大器理论,重点是降低第一个晶体管的噪声系数,为此选择PNP型超β晶体管,并使之工作在低Uce,低Ic1的微功耗状态,并采取低噪声阻容元件等措施。
3) α,β',β form
α,β',β晶型
4) β crystal form
β晶型
1.
The effect of crystallization temperatures(100 ℃~140 ℃) on the production of β crystal form in isotactic polypropylene nucleated by pimelic acid,magnesium pimelate and aluminium pimelate respectively had been studied in this paper.
研究了结晶温度(100℃~140℃)对庚二酸、庚二酸镁、庚二酸铝成核等规聚丙烯中β晶型生成的影响。
2.
It introduced six sorts of β crystal form nucleation, which had been developed successfully, and emphatically introduced two sorts of substituted acylamide and rare earth, which have been to practical application.
介绍了六类已开发成功的β晶型成核剂品种,其中重点介绍了已获得实际应用的取代酰胺类和稀土类两种,并介绍了PP的β晶型成核配方设计原则。
3.
The mechanical properties, WAXD and DSC analysis of fiber-grade Z30S PP modified by β crystal form nucleator (amide compound) had been studied.
研究了β晶型成核剂(酰胺化合物)成核改性纤维级聚丙烯Z30S的力学性能,进行了广角X射线衍射和DSC分析。
5) β crystalline form
β晶型
1.
Progress in research on β crystalline form PP composites;
β晶型聚丙烯复合材料研究进展
2.
The results showed that the α crystalline form was tra nsformed to β crystalline form, and impact resistance of PP was enhanced clearl y by the addition of βnucleating agent.
研究了β晶型成核剂及其用量对不同牌号聚丙烯力学性能的影响,并对其进行了正交偏光显微镜观察、DSC和大角X射线衍射分析。
6) β-crystalline form
β晶型
1.
Theβ-crystalline form polypropylene were produced and the mechanical properties,the crystalliza.
表面处理改善了碳酸钙的表面性能,提高了与聚丙烯的相容性,同时也促进了聚丙烯中β晶型的生成,改善了聚丙烯/碳酸钙复合材料的力学性能、结晶性能和耐热性能。
2.
The β-crystalline form iPP was prepared by an amine compound NA-WB.
通过酰胺化合物(NA-BW)引导等规聚丙烯(iPP)制备高水平β晶型聚丙烯(β-iPP),借助广角X射线衍射(WAXD),差示扫描量热仪(DSC)及偏光显微镜(POM)研究其结晶形态及结晶行为,并研究了β型成核剂对iPP力学性能的影响。
补充资料：过度型晶体
指介于原子晶体、金属晶体和分子晶体之间的一种过度型晶体。如石墨晶体和层状晶体，每层内每个碳原子于另外三个碳原子以共价键结合，六个碳原子在同一平面上形成正六边形的环，伸展形成层状结构，表现为很高的熔点和沸点，这种情况使石墨象原子晶体。在同以平面的碳原子各剩一个可以自由移动的价电子，相当于金属中的自由电子，表现为石墨能导电，这种情况使石墨又象分子晶体。故石墨属于混合晶体。属于过度型晶体的还有黑磷和云母等
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条