In recent years much attention has been paid to phosphatized spheroidal fossils found in the Sinian Doushantuoan phosphorites in Weng an, Guizhou Province.
我国贵州瓮安陡山沱期磷块岩中的磷酸盐化球状化石是近年来受到广泛关注的一类微体化石。
The nucleus of the spheroidal graphite should be of spheroidal shape.
石墨球的核心应该是球形。
One design method for winder of spheroidal tank was presented in this article.
介绍一种球罐盘梯的设计方法。
The ultra-fast cooling process contributes to good spheroidal effect of pearlite.
轴承钢超快冷却有助于珠光体获得更好的球化效果。
A homogeneous weld electrode was developed for welding spheroidal graphite cast iron.
采用该焊条对球墨铸铁焊接时，可以达到同质焊缝要求。
Using the method of isothermal forging spheroidal graphite cast iron pipe of good quality can be produced.
利用等温锻造方法可生产优质的球墨铸铁管。
The torsional strength of the notch of spheroidal graphite (SG) cast iron by continuous casting was tested.
研究了一种用水平连铸技术生产的球墨铸铁型材的扭转强度和缺口扭转强度。
Spheroidizing is the process of producing a structure in which the cementite is in a spheroidal distribution.
球化是使渗碳体产生成类似球状分布结构的工艺。
The spheroidal parts can be processed by adopting the number control lather, but the cost of process is high.
球形零件可采用数控机床加工，但加工成本较高。
The pollen grains are small to medium in size and spheroidal or subprolate in shape, with a few being prolate.
一般中等大小，绝大多数为圆球形，少数为近长球形或长球形。
In chapter 3, a novel optimal UWB shaping pulse design algorithm based on prolate spheroidal wave functions is described.
第3章主要介绍了一种基于扁长椭球波函数的超宽带成形脉冲优化设计算法。
The cause of the grinding crack on medium frequency induction hardened CAM shaft made of spheroidal cast iron was analyzed.
对球墨铸铁中频淬火凸轮轴磨削裂纹产生的原因进行了分析。
Results showed that the fine and near-spheroidal microstructures can be obtained by properly choosing the SIMA processing parameters.
结果表明：通过合理选择SIMA工艺参数，能够得到晶粒尺寸小且呈近球状的半固态组织；
This paper deals with the structure of the cast steel with spheroidal graphite and the forming mechanism after normalizing and forging.
主要研究成分及第二相组织对球墨铸钢耐磨性的定量影响规律，从而为合理应用这一新材料和生产中的质量控制提供技术依据。
This paper presents a full wave analysis of electromagnetic (EM)field distribution inside a dielectric prolate spheroidal human head model.
文中给出一长椭球介质人头模型中的电磁场全波解。
It is available to strengthen the bit teeth by replacing the granular casting tungsten carbide with the spheroidal sintering tungsten carbide.
用球状烧结碳化钨代替粒状铸造碳化钨作钢齿钻头齿面堆焊材料是提高齿面强化效果的有效途径。
The structure of spheroidal carbide in wear resistant white iron was investigated by SEM observation and EPMA of ion etched metallographic specimen.
用离子蚀刻加扫描电镜观察和微区成分分析的方法研究了耐磨白口铁中球形碳化物的结构。
This paper suggests a new image edge detection method which is based on properties of prolate spheroidal function and performed with a special filter.
本文提出一个新的图象边缘检测方法，采用扁球面函数的特性，形成一种特殊的滤波器。
The microstructure morphology of spheroidal graphite cast steel after as-casting, annealing, normalizing, forging was investigated emphatically in this paper.
重点分析了球墨铸钢铸态、退火、正火、锻造后的组织特征。
This paper affords the transformation formula of coordinate systems so that the calculation of propagation range may be carried out on the same spheroidal surface.
本文提供了坐标系统的变换公式，以达到在同一椭球面上进行距离计算。
The effects of carbon content on microstructure and mechanical properties of spheroidal graphite cast iron containing arsenic, tin, lead and titanium was investigated.
研究了碳量对含砷锡铅钛球墨铸铁组织与力学性能的影响。
The paper investigated the vermicular graphite and its transition morphologies to lamellar and spheroidal graphite in deep-etched compacted vermicular iron bars by SEM.
本文利用扫描电镜对深腐蚀蠕墨铸铁试样中的蠕虫状石墨及其与片状石墨、球状石墨之间的过渡形态进行了观察研究。
The experimental research on 'diffusion bonding of spheroidal graphite cast iron and copper is conducted by adopting the self-made equipment of small vacuum diffusion bonding.
采用自制的小型真空扩散接合装置，进行了球铁与铜扩散接合试验研究。
After being treated with this technique, the disperse spheroidal carbide can be obtained in the carburizing case which is superior to that by normal carburizing in properties.
经该工艺处理后渗层可获得弥散碳化物，其性能大大优于常规渗碳。
NOTE the transmission technique has insufficient sensitivity to detect the discontinuities found in spheroidal graphite cast iron castings and is used in exceptional cases only.
注意：对于检测球墨铸铁中的缺陷来说，穿透技术的灵敏度不够，只有在特殊情况下使用该技术。
Adding different alloy combination of re, copper and titanium, then through gestation and nodulizing disposal, we got the fine texture of ferrite pearlite and spheroidal graphite.
通过在中硅耐热铸铁中添加不同组合的合金元素稀土、铜、钛使其合金化，经过孕育和球化处理，得到铁素体+珠光体+球状石墨的金相组织。
The experimental result in this paper shows that the theory of elastic-plastic mechanics can be basically applied to spheroidal graphite cast iron with the matrix of ferritic-pearlitic.
本文的实验结果表明，弹塑性力学的理论和假设基本适用于铁素体-球光体基体的球墨铸 铁材料。
It is indicated by the performance analysis that the approach here has comparative bias and variance as the approach of discrete prolate spheroidal sequence multitaper spectral analysis.
性能分析的结果表明，此方法与离散长球序列多窗口谱分析方法具有相当的估计偏差与方差性能。
Mathematical model of the microstructure as well as the mechanical properties of spheroidal graphite iron casting was researched on the basis of solidification and thermodynamics theories.
根据结晶及相变动力学理论，建立了预测球墨铸铁件铸态组织及机械性能的数学模型。
Mathematical model of the microstructure as well as the mechanical properties of spheroidal graphite iron casting was researched on the basis of solidification and thermodynamics theories.
根据结晶及相变动力学理论，建立了预测球墨铸铁件铸态组织及机械性能的数学模型。
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