球形

An amophous nano—size Si〓N〓 powder with high purity, good spheroidicity, and an average diameter of d〓=68nm, was prepared by plasma induced CVD method.

采用高频等离子体气相反应法成功制备了纯度高，球形度好，平均粒径d〓=68nm的无定形纳米Si〓N〓粉料。

Seeds oblong-ovoid or spindle-shaped to shortly linear, minute, ends often truncated.

种子长圆形卵球形的或纺锤形到短线形，小，末端通常截形。

In a preferred embodiment, the cover of the distillation tank is hemispherical, the alcohol vapor recovery port is fitted with a splash guard, and the entire cover is removable to allow for cleaning of the distillation tank.

在首选的体现，封面的蒸馏罐半球形，酒精回收港口装有飞溅后卫，整个覆盖移动，让清洁的蒸馏罐。

Is only a small number of China metal powder injection molding one of the manufacturers, Main production PM powder metallurgy, powder injection molding, Precision Casting, metal structural parts, metal accessories, gears, Sleeve Bearing, precision components profiled complex, non-standard conditions, including : Sleeve Bearing, oil bearings, bushings, flanged connecting sleeve; Double gears, bevel gear, Pulley, synchronous wheel, sprocket, AK47 toy gun gear, various micro-precision gear drive; PM microporous filters, filter tubes, mufflers and filtration materials, Copper filters, stainless steel trap; mixer blades, coffee machine cutter heads Soymilk Machine grinding pieces Juicer blades, Juice blades, and household electrical appliances, metal accessories; Oscillator phone, cell phone parts and notebook parts; Metal keys, ATM machine keys; Toys accessories, fiber accessories; various copper, iron, and stainless steel products, alloy products; automobiles, motorcycles, machine tools, electrical machinery and office equipment, medical equipment and other types of machinery, electrical appliances, electric / pneumatic products within the precision components; Industries products within the structure of precision metal parts!

其中包括：烧结含油轴承、轴套、粉末冶金铜套、含油杯士、法兰、衬套、偏心含油轴承、球形含油轴承；粉末冶金齿轮、双联齿轮、伞齿轮、锥齿轮、同步皮带轮、链轮、棘轮、扇齿轮、双层齿轮、多层齿轮、直齿轮、斜齿轮、各类精密传动齿轮；粉末冶金烧结微孔过滤器、烧结过滤片、粉末冶金滤芯、滤筒、滤管、消声排气节流阀、青铜烧结过滤器；搅拌机刀片、绞肉机圆盘刀片、十字绞刀、铰刀盘、圆孔板、胡椒研磨件、豆浆机刀片、榨汁机刀片、果汁机刀片、咖啡机刀片、磨豆机刀片、家电五金配件；凸轮、凹轮、偏心轮、摆砣；手机振子、手机零件、笔记本零件；金属按键、ATM机按键；玩具配件、光纤配件；各种铜基、铁基、不锈钢制品、合金制品；汽车、摩托车、机床、电机、办公器械、医疗器械及其他各种机械、电器、电/气动产品内的复杂异形精密零件、非标准件；各行业产品内部用的精密金属结构零配件、五金配件。

Spherical bismuth stannate particles with single pyrochiore structure were obtained when the precursor was calcined at a temperature as low as 500℃.

该前驱体在500℃下锻烧即可形成具有烧绿石结构的四方晶相的Bi2Sn2O7纳米粉体，其平均晶粒尺寸为10nm，粒径分布在10~20nm之间，外观呈球形。

H2O conversion film is formed after treatment in the stannate solution, and the immersion test and potentiodynamic polarization show that the stannate conversion treatment can provide good protection to the AZ91D alloy.

H2O为主要成分的转化膜，转化膜由细小的球形颗粒密积而成；腐蚀性能评价证明它可对基体合金起到一定的防护作用。

The results show that a MgSnO3·H2O conversion film is formed by treatment in the stannate solution at 90℃, and the immersion test and potentiodynamic polarization show that the corrosion resistance of the AZ91D alloy is improved to some extent.

结果表明：锡酸盐转化处理后合金表面形成了以MgSnO3·H2O为主要成分的转化膜，可对合金起到一定的防护作用；转化膜由细小的球形颗粒密积而成，颗粒之间存在间隙，它可以为化学镀镍的前处理过程提供良好的吸附条件；转化膜上的化学镀镍层组织致密、无缺陷， MgSnO3·H2O转化膜在镀镍层与基体之间起到过渡作用，镀层的磷含量达到9%，与基体结合良好；在3.5% NaCl (pH=7)溶液中的动电位极化测试表明，镀镍以后的合金在阳极极化过程中发生了明显的钝化，耐腐蚀性能进一步提高，对基体起到了较好的防护作用。

The structure and operation principle of a PM spherical stepper motor are discussed and its configuration parameters are analyzed.

介绍了一种新型永磁球形步进电动机的结构、工作原理，对电机的结构参数进行了深入分析。

A stereographic projection is an ancient method of mapping points on the surface of a sphere to points on a plane.

立体投影法：这是一个古老的方法，我们可以用这个方法把一个球形上的表面地图投射到一个平面上。

It's able to stich multi-row and full-spherical panoramas.

它能够拼接多行和全球形全景。

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！