微米

Typically, a well-designed injector atomizes a large population of propellant droplets to less than 0.004 inches (100 microns) in diameter.

通常情况下，一个设计良好的喷油器atomizes一个人口众多的推进剂液滴少于0.004英寸（ 100微米）的直径。

Hollow microspheres are one kind of new material in nano- or micro- size with core-shell special structure whose core is hollow while the shell is bestrewed with pores.

中空微球是粒径为纳米到微米级的一种具有核-壳特殊结构、核心中空而壳上布满孔道的新型材料。

Taller three oxidates wolfram of test first of all by means of calcines APT''s system is get pureness ,Afterwards separately after oxidate and reduction ,The wolfram restores to the wolfram powder through three oxidates ,The gains wolfram powder again oxidate is three oxidates wolfram ,Restore queen after twice oxidates ,The gains stuff pellet is more and more carefully ,Finally obtain sub－micron yardstick three oxidates wolfram .

实验首先通过煅烧APT制取了纯度较高的三氧化钨，然后分别经过氧化和还原，由三氧化钨还原为钨粉，所得钨粉再氧化为三氧化钨，经过两次氧化还原后，所得材料颗粒越来越细，最终得到亚微米尺度的三氧化钨。

Inertial force still plays leading role under micro-metre scale, it could move the particles in micro-fluid so as to eliminate the chocking phenomenon of micro-nozzle.

惯性力在微米尺度下仍然起主导作用，可以驱动微流体中微粒的移动，消除微喷嘴堵塞现象。

The process of the invention mainly comprises disintegrating substrate material of waste printing wiring board into particle material whose particle size is 0.5-3.5 micron, the mixing with double bond reactant, adding with phenyl ethene, conducting reaction under gamma ray irradiation condition, modifying substrate material particles, then commixing material which is treated with acrylonitrile-butadiene-styrene, wherein the adding quantity of substrate material particle is 35%-35%, conducting extrusion pelleting for commixing material on a plastic extruder, wherein extruding temperature is 200-250 DEG C, and finally obtaining plasticity plastic particles with excellent property.

本发明方法主要是：先将废旧印刷线路板基板材料粉碎成为粒径为0.5～3.5微米的颗粒料，然后与具有双键的反应物混合，再加入苯乙烯，并在γ射线的辐照条件下进行反应，将基板材料颗粒进行改性处理。

At carbonizing temperature between 425 ℃ and 720 ℃,the micropore volume is between 0.124-0.222 mL/g. Surface of the carbon is also observed by scanning electron microscopy. During thermogravimetric analysis,the cell wall of coconut shell disassembles to form macropore at μm level while its cellulose structure was retained.

本研究还探讨了椰壳炭的孔结构参数，炭化温度 4 2 5～ 72 0℃，其微孔容积为 0 。12 4～ 0 。2 2 2mL / g ，并用扫描电子显微镜观察了椰壳炭的表面形貌，椰壳在热分解时，细胞壁分解形成了微米级的大孔，并保留了椰壳的纤维状结构。

The ancient rocks also contained spherical carbonaceous aggregates up to 20 mm diameter, that resemble algae or the cysts of flagellates, and delicate carbonaceous filaments up to 150μ m long.

这些古岩石也包括了球形的碳质聚集物，直径可达20mm 的类似于藻类或鞭毛虫的囊泡，以及脆弱的150微米长的碳丝纤维。

Small particles (typically 0.01-1 micron) move randomly in the suspension, collide with each other and form flocculates, reducing their

微小的粒子（粒径0.01-1微米）在悬浮液中自由移动，相互碰撞形成絮凝，降低总能量。粒子越小，絮凝作用越强。

On the basis of literature search on erosion of axial flow fan's blade, depending on the failure mechanisms, several kinds of coatings were prepared. NiWC35, Ni60, SNi46 and SNi67 spraying and fuzing coatings were prepared by spraying and fuzing. Cermet composite coating of LX88A was prepared by arc spraying. Cermet composite coatings of conventional WC/12Co and nanostructured WC/12Co were prepared by HVOF.

本文在综合国内外关于轴流式引风机叶片冲蚀领域的研究文献的基础上，以冲蚀机理为依据，采用火焰喷熔工艺制备了NiWC35、Ni60、SNi46和SNi67喷熔层，采用电弧喷涂工艺制备了LX88A金属陶瓷复合涂层，采用HVOF工艺制备出微米WC/12Co和纳米WC/12Co金属陶瓷复合涂层。

On the basis of literatures, inclosing the structure of ultrafine stirred mill and the process parameter, much work had been done to the foundation of theory simulation,the study of comminution theory,the analysis of experiments,the equipment development and the practical application, the following are the main contents of this paper:The paper analyzed the basic structure, the comminution mechanism and the capability parameter of the ultrafine stirred mill in detail.

超细搅拌磨机是一种高效节能的超细粉碎设备，是目前制备亚微米粉体或浆料的主要工业生产方法，所以，研制产品粒度细、粒度分布均匀、处理量大、能耗省的工业大型超细搅拌磨机就显得非常重要。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。