团聚

The agglomeration behavior of powder and the effect of agglomeration on compaction and sintering were studied in detail.

对粉料的团聚行为和团聚对成型、烧结的影响作了深入的研究。

The method involves forming a coacervate of the biologically-active material and chitosan and then dehydrating mixture of coacervate and trehalose solution.

该方法包括：将该生物活性材料和脱乙酰壳多糖形成团聚体，然后对团聚体和海藻糖溶液的混合物进行脱水。

On the basis of the results, a mathematical model is developed to explain coalescence growth process of UFMP.

在此基础上建立了团聚生长数学模型，该模型能较好解释超微粉的团聚生长过程。

But for the strong activity of Nano-TiO2, the conglobation will happen easily, and it will greatly reduce the application effect in coating. And for the hydrophilicity , its hard to break up uniform in resins, so air gaps appear in the interface, then the high polymer in the interface willhappen degradation reaction or embrittlement reaction, and coatingsperformance will fall down.

但是由于纳米粒子表面极强的活性，使它们很容易团聚在一起从而形成带有若干弱连接界面的尺寸较大的团聚体，这大大降低甚至消除了纳米颗粒的实际应用效果，同时由于纳米粒子表面亲水疏油，在有机高分子树脂中难于均匀分散，界面上会出现空隙，当空气中的水分进入空隙中就会触发界面处高聚物的降解、脆化，导致涂层失效。

The Dragon Boat Festival is also a day of family reunion.

端午节也是一个家庭团聚的节日，出嫁后的女儿们每到这个节日都要回娘家团聚。

By investigating the effect of all the factors, including particle size, density, elastic deformation coefficient, Hamaker constant, surface energy, yield limit and relative velocity, on the particle behavior in the process of collision, the rule of collision and agglomeration with the change of these factors is obtained in detail.

为考察包括颗粒的粒径、密度、弹性变形系数、Hamaker常数、表面能、屈服极限和碰撞初速度等众多因素对碰撞规律和团聚趋势的影响，本文采用"数值实验"方法，获得了碰撞力与范德华力的相互关系、碰撞弹性回复系数和团聚趋势随各参数的变化规律。

In all fertilization treatments, the mean mass diameter of WSAs was larger in 0-10 cm than in 10-20 cm soil layer. Compared with non-fertilization, long-term fertilization increased the MMD of WSAs, and organic manure was superior to chemical fertilizers.

各处理0~10cm土壤水稳性团聚体平均质量直径均大于10~20cm土层；自然土壤的团聚体MMD显著高于同层次耕作土壤，长期施肥处理MMD大于无肥对照，有机物质培肥处理明显高于化肥处理。

Firstly, the mechanism of the preparation of superfine quartz powder with ball mill is studied in this article, based on nature of quartz material, Griffiths strength theory and the crush theory of planetary ball mill. The problem of granulation during the process of the preparation of superfine quartz powder is studied minutely. And proposed increasing dispersant and disperser medium to restrain granulation, and dispersing use ultrasonic after milled.

首先，本文结合石英材料的基本物性，以格里菲斯强度理论和行星式球磨机的粉碎原理为基础，研究了球磨法制备超细石英粉体的机理，同时对粉石英制备过程中的团聚问题及其控制作了细致的研究，提出粉磨过程中增加分散剂和分散介质来抑制团聚，粉磨后采用超声法进行分散，并确定了最佳分散剂、分散介质的用量和最佳超声分散时间。

The mainly conclusions in our research are as flowing: tungsten trioxide powders with 100 nm primary particle are obtained by spray drying,calcination and wet milling process, and an average size of quadric particle composed of agglomerated particles is 0.64 μm; tungtsen powders with 39 nm grain size and 60 -100 nm primary particle are produced directly from previous tungsten trioxide using one step reduction in hydrogen at 700℃, and an average size of quadric particle of tungsten powder is 2.91 μm; tungsten trioxide and copper tungstate compound powders with 100 nm - 200 nm primary particle are produced using ammonia metatungsten and copper nitrate as raw materials by spray drying,calcination and wet milling process;the compound powders are transformed completely into tungsten and copper compound powders by reduction in hydrogen at 700℃,in which tungsten grain size is 59 nm and copper grain size is 51 nm; primary particle size of compound powders is 80 - 120 nm,and an average size of agglomerated quadric particle is 1.86 μm; tungsten nitride powders with 35 nm grain size are prepared from tungsten trioxide powders by nitrogen treatment thoroughly in pure ammonia at 650℃, and an average size of agglomerated quadric particle is 0.64 μm in normal temperature.

研究结果表明：采用喷雾干燥—焙烧—球磨工艺可以制备出粒度约为100nm的WO_3粉体，它们在团聚后形成的二次颗粒平均粒度为0.64μm；采用一步直接氢还原方法可在700℃下从上述WO_3粉体制备出晶粒尺寸为39nm的、一次颗粒粒度为60-100nm的W粉体，其二次颗粒的平均粒度为2.91μm；以偏钨酸铵、硝酸铜为原料，采用喷雾干燥—焙烧—球磨工艺可制备出一次粒度为100-200nm的WO_3和CuWO_4混合粉体；采用氢还原工艺可在700℃下将这种粉体完全转变为W、Cu复合粉体，其中W的平均晶粒粒尺寸为59nm，Cu的平均晶粒尺寸为51nm；复合粉体的一次颗粒尺寸为80-120nm，在常温下团聚后形成的二次平均粒度为1.86μm；采用纯氨氮化工艺可以在650℃下由WO_3粉体制得WN，其晶粒尺度为35nm，在常温下团聚后的二次平均粒度为6.4μm。

The corresponding antiaggregation methods were introduced aiming at the problem of Aggregation in liquid preparation of nanometer tin dioxide.

针对液相法制备纳米二氧化锡颗粒团聚问题，采取了相应的防团聚措施，在后续脱水过程中采用醇洗和共沸蒸馏两种方法，建立了共沸蒸馏装置，结果表明该方法防团聚效果较好。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。