球形

The article mainly introduced the type of abradant, production methods, production technics and especially introduced two kinds of abradant, the common aluminum hydroxide by sintering process and spherical aluminum hydroxide with sodium aluminate and carbon dioxide.

主要介绍了牙膏磨擦剂的种类、各类牙膏磨擦剂的生产方法和生产工艺，并重点介绍了两种氢氧化铝牙膏磨擦剂，即以烧结法工艺生产的普通氢氧化铝颗粒和由铝酸钠溶液和二氧化碳气体制备的球形氢氧化铝牙膏磨擦剂，并给出了两种氢氧化铝牙膏磨擦剂的工艺流程图、电镜分析图谱、物化性能和工艺指标。

The results of SEM and AFM show that the obtained titania powder from the solvent of distilled water and absolute alcohol is intact solid and spherical particle with smooth surface and perfect dispersibility. The crystalline size is about 300 nm.

SEM和AFM结果表明，以去离子水和无水乙醇混合液为溶剂制备的TiO2粉体为完整的买心球形颗粒，颗粒表面非常光滑，分散性比较好，粒径约为300 nm。

The book covers the latest advances of the fields of perception, transduction and responses to most biotic and abiotic signals met in a plant life, including light perception and transduction, wound- and mechanical signalling, the role of active oxygen species in plant signal transduction, heat stress signalling, cold acclimatation, dehydration, salt stress, recognition and signalling in interactions between plant and bacteria, fungi, viruses, as well as Rhizobia-legumes interactions, rhizospheric signals, ectomycorrhizal symbiosis, and plant-insect interactions.

该书内容覆盖了植物生命对大部分生物与非生物信号感知，传导和反应，包括光感知和传导，损伤和机械信号传导，活性氧在植物信号传导中的作用，热胁迫信号传导，冷适应，脱水，盐胁迫，植物与细菌，真菌，病毒相互作用中的识别和信号传导，以及根瘤菌与豆类的相互作用，球形根瘤菌的信号，外生菌根共生现象，和植物与昆虫之间的相互作用。

After that, the apical cell divided vertically respectively to form 2-celled, 4-celled, and multicellular proembryos and developed into globular embryoid, heart-shaped embryoid, torpedo embryoid,cotyledonary embryoid.

花药很容易诱导成球形胚或心形胚，但大多数胚状体发育停留在球形胚或心形胚阶段，不能形成正常胚，而成为畸形胚，只有少量发育成正常胚，最终发育成正常植株。

The marine yellowish-green alga (strain PP983), often ellipsoidal, occasionally spherical, 3-4μm long, 2. 5-3μm wide, contains one nucleolus. Morphological features and pigment composition analysis showed that this alga was a new species of the Xanthophyta and was named as Ellipsoidion maratilis Shi et Hu.

从中国东海海域采集并分离得到的一种黄绿色单细胞超微型藻（品系PP983）多为椭球形，少为球形，含一个细胞核，形态观察结合色素分析表明它是黄藻门、柄球藻目、椭球藻属中的一个新种，被定名为海生椭球藻(Ellipsoidion maratilis Shi et Hu，sp.nov。)。

Capsule subglobose or ovoid, slightly laterally compressed,(1.4-)2-4.5 cm, usually densely purple-brown spiny, rarely smooth; spines 1-2 cm.

卵球形的近球形的蒴果或，稍侧面压扁，(1.4-)2-4.5厘米，密被通常紫色棕色刺，很少平滑；刺1-2 厘米。

For this project, in virtue of the experimental observations on the vertical vibrator,the invert torsion pendulum and the vertical pipe with capillary outlet,and by using numerical simulations of the discrete element method, the mixing and segregation of granular materials of spherical and neraly spherical shape with the different size and different density under the vertical vibration or parallel shear motion have been researched, and the relationship between the macroscopic segregation properties and the microscopic characteristics of granular materials and the outer actions has also explored. The theoretical model and method describing the mixing and segregation of granular materials is developed.

本项目通过在垂直振动台、倒扭摆、带毛细出口的竖直玻璃管等装置上进行实验观测，并采用以离散元方法为主的数值模拟，研究了具有不同粒子尺寸、密度的球形或近球形颗粒物质在具不同结构形状容器中垂直振动和剪切运动时的粒子混合和偏析情况，探索颗粒材料流的宏观偏析特性与微观特征量及外部作用间的关系，发展描述颗粒物质混合和偏析的理论模型和方法。

Finally, the influence of permanent tide is recalculated using the same precise development of TGP. This work can be taken as a theoretical reference for the research of highprecision space geodesy and astrogeodynamics. tide-generating potential ; station displacements ; spectrum method ; Love/Shida number

最初的Love数和Shida数是由静态球形地球的潮汐模拟理论推求的，由于地球是旋转椭球形的天体，地球形变对引潮力位的响应存在着不同调和函数的微小混合，这样Love数和Shida数就与测站纬度和TGP的调和级次有关，纬度特性可通过引入一组常数来表示，最初的结果由Wahr

The pollen grains are monad, small, radically symmetrical, and tricolporate, with a spheroidal to subprolate shape in equatorial view and three-lobed circular shape in the polar view.

结果表明，钩藤属植物的花粉为单粒，小型，辐射对称，赤道面观圆球形至近长球形，极面观3-裂圆形，具3孔沟，萌发沟裂缝状，长达两极。

The small-grained spherical copper powder is large in the contact area with the steel base and binds sufficiently and firmly in the process of sintering.

DF-2BS钢基铜塑复合材料是由钢基体、小颗粒球形铜粉、表层大颗粒球形铜粉、表层塑料构成的四层复合材料滑道。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！