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The grain is refined remarkably after adding La and the average grain size is decreased from 3mm to 1mm.

稀土La的加入可将合金品粒尺寸由未变质时的3mm细化到1mm。

The results show that the orientation of crystal grain is changed and crystal grain is refined by magnetic field. The optimal properties of welded joint appears when magnetic field frequency is 20 Hz.

结果表明，外加纵向磁场通过电磁搅拌作用改变晶粒的结晶方向、细化晶粒，在磁场频率为20 Hz时，焊接接头的力学性能达到最佳。

The results showed that Nd2Fe14B grain refined quickly and the grain size of α-Fe decreased while increasing milling time.

结果表明：延长球磨时间，Nd2Fe14B相迅速细化形成非晶，α-Fe的晶粒尺寸逐渐减小，25h后趋于定值（约为7nm）。

The grain shape of Co change to equaxial fine grain and refined by adding of Al2O3 powder.

SEM的表面型态中，未添加Al2O3皆发现等轴状细晶，在添加Al2O3后，成核点数目变多，晶粒会随著添加量增加而减小。

With decreasing the grain size of austenite before the phase transformation, the transformed ferrite fraction is increased and the final grain size is refined.

在应变、过冷提供相变驱动力的条件下，相变前奥氏体晶粒尺寸对于铁素体微观结构的形成有着重要的影响。

The results show that the grain size is refined by the addition of Nd or Dy, especially combined addition is better than single addition. With the addition of 0.2 % Nd and 0.6% Dy, the grain size is reduced from 150 μm to 60 μm. Combined addition with two rare earths elements makes the tensile strength, yield strength and elongation of ZK10 alloy increase to 191.0 MPa, 69.0 MPa, and 16.6%, increasing by 89%, 43%, 232% respectively, compared with ZK10 alloy without RE element.

结果表明：ZK10镁合金中分别加入Nd和Dy均能细化晶粒，且Nd和Dy同时加入的效果优于单一加入的效果，当同时加入质量分数为0.2% Nd和0.6% Dy时，合金的平均晶粒尺寸由原来的150 μm细化至60 μm，使ZK10合金的抗拉强度和屈服强度分别提高至191.0 MPa和69.0 MPa，伸长率达到16.6%，与未加入稀土的ZK10合金相比分别提高89%，43%和232%。

Besides, the dendrite and the boride morphology in the big grain and small grains are same. All these results show that the boron addition does not influence the solidification process, but promote the β→α transformation, so still grain refined lamella can be gained at last.

这些实验结果表明：硼化物对Ti46Al8Nb基合金晶粒的细化作用主要不是通过改变 L →β的凝固过程得到的，而是通过影响凝固后的β→α固态相变来实现的。

The distribution of Sn in α-Mg is basically uniform and the grain can be refined significantly with 1.5%Sn addition, however the grain presents the trend to be coarse with excessive Sn content.

微量Sn基本均匀分布在合金基体上，并有效地细化晶粒，Sn质量分数为1.5％时细化效果显著，多量的Sn有使晶粒粗大的倾向。

C. There are great differences among trades: the optimum trade in COEs is alcohol-making, grain processing and meat processing etc.; the optimum horizontal in POEs is leather processing, clothes-making, grain processing, alcohol-making etc.; the optimum horizontal in SOEs is food processing, meat processing and refrigerative warehouse etc..

由于不同产权不同行业的企业之间的经济效益存在着差别，所以区域经济存在着巨大的经济效益潜力，以经济效益较好的民营企业为参照，通过计算，在转换机制的情况下可使得该区的经济效益提高几十倍，预言随着经济的进一步发展，国有企业民营化将会成为必然。

With increasing undercooling, the solidification microstructures of the alloys have changed, for example, grain refinement, transformation from regular rod eutectic structure to spherical anomalous eutectic grain structure with particulate morphology; while at higher undercooling, fine regular eutectic structure was observed.

随着过冷度的增加，其凝固组织发生了一系列的变化：晶粒逐渐细化，凝固组织从规则棒状共晶向异常粒状共晶组织转化，最后得到显微结构细小的胞状共晶团组织。

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％。