变为

While those who otherwise would have lacked sufficient capital to enter farming benefited from cheap land, disposal policies also helped prevent the subdivision of land into unprofitably small units, a persistent problem in many older societies.

那些原本没有足够资金的人，得益于廉价土地和置地政策，开始投入农业生产。避免了小块土地变为荒芜这一很多其他国家都面临的问题。

The major difference between these is reversibility or unreversibility of disease. If patients with acute renal failure are unable to get immediate and adequate medical care, they can progress to unreversible chronic renal failure, with a need for further dialysis or even transplantation.

肾衰竭分为急性和慢性肾衰竭，而两者最大的不同在於可逆与不可逆，然而急性肾衰竭病人若未能及时接受适当的治疗，将会演变为不可逆性的慢性肾衰竭，必要时将倚赖透析治疗或肾脏移植。

Smoothing functions can transform the unsmooth support vector regression into smooth ones,and thus better regression results are generated.

光滑函数将不光滑的模型变为光滑模型，改善支持向量回归机的回归性能和效率，从而降低计算的复杂性。

WC particles also can make the abrasive particles obtuse ,consequently reduce the cutting of abrasive particles to the coating.(7) The coating surface with unsmoothed units make the abrasive particles change moving direction . They can change the ploughing to rolling and bring light longitudinal vibration contributing to reducing the shearing force when the surface are worn by abrasive particles.

具有非光滑结构单元的复合层表面使参与复合材料磨损的磨粒改变运动方向，使之由滑动变为滚动，产生有利于减小切向力的法向微振动，减少磨粒和复合材料的接触面积和作用时间，从而大大减轻了磨粒对复合材料表面的损伤。

If the force P is reduced or made zero, the elastic force will restore the spring to its original unstretched condition.

如果力P减小或变为零，那么弹性力就使弹簧恢复当初的未伸长状态。

If matched unsuitably, even if the building is in a firm state, with reinforced concrete, it may suffer bad damage, causing people's death, called one adventure. The future task is to optimize the 8 measures, gradually changing one adventure into 6 no death, 7 no death, 8 no death.

配合不当，再&坚固&的建筑，即使全部由钢筋混凝土构成，都有可能遭严重破坏，造成人员伤亡，称之为&一冒险&，未来的任务就是优化组合八项措施，将&一冒险&逐项变为&六不死&，&七不死&，&八不死&。

The results showed that the addition leading to -2-phenyl-2-(2-vinylpiperidin-1-yl) ethanol 7 could proceed with good diastereoselectivity and excellent yield (95%).(3) The selective N-deprotection of -2-phenyl-2-(2-vinylpiperidin-1-yl) ethanol 2 without affecting the vinyl group in the substrate were untaken.(4) The Zip reaction for the transformation of -1-(3-aminopropyl)-3-methylazecan-2-one 8 to -7-Methyl-1, Sdiaza-cyclotetradecan-6-one 9 were undertaken. The results showed that, under controlled conditions, acceptable yields (43%) could be achieved and racemization can be minimized during the ring expansion reaction.

该合成路线与文献方法相比，反应条件较温和，也缩短了反应时间；(2)哌啶衍生物2与乙烯基格氏试剂进行加成反应的条件和立体选择性，取得了较好的结果（差向异构体比为80：20，产率95％左右）；(3)不饱和哌啶衍生物7在不影响碳碳双键的情况下去除苯基甘氨醇手性辅助基的条件；(4)具有羰基α位手性的氨基酰胺8在不同条件下经Zip重排反应转变为9的反应，控制反应条件，可使反应中消旋化减小到最小的程度。

Her towns have become a waste, a dry and unwatered land, where no man has his living-place and no son of man goes by.

51：43 他的城邑、变为荒场、旱地、沙漠、无人居住、无人经过之地。

The results show that the alloy undergoes obvious plastic elongation, the specimen fractures into four sections and the diameter changes from 16 mm to 12 mm. The fracture surfaces distribute randomly well developed and partially developed veinal patterns. The deformation behavior of alloy is non-Newtonian flow behavior. About 3% amorphous matrix of extruded specimen transforms crystal, the crystal particles with size of 10-20 mm are precipitated in the amorphous matrix, the thermostability of the extruded specimen was lowered. The failure of the alloy is mainly attributed to non-uniform viscous flow under high strain rate resulting from the hydrostatic extrusion process.

结果表明：非晶合金在高应变速率下产生了明显的塑性变形，直径从16 mm变为12 mm，断裂为4段，且样品断口上随机分布着充分发展与未充分发展的脉纹式切变带，由此可看出非晶合金的变形为非牛顿体变形行为；挤压后的样品约有3％的非晶相发生晶化，在非晶基体上析出10～20 nm的纳米晶粒，导致挤压后非晶合金的热稳定性降低；静液挤压高应变速率变形条件使非晶合金产生非均匀流变，是造成非晶合金断裂的主要原因。

Any of various plants of the genus Vernonia of tropical and warm regions of especially North America that take their name from their loose heads of purple to rose flowers that quickly take on a rusty hue.

热带或温带地区特别是北美的任何斑鸠菊属植物，因其紫红色的花冠很快变为锈色而得名。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。