可接近的

The nanoparticle composites took the shape of roundish spheres with their mean diameter of about 70 nm. The nanoparticle composites have good dispersion, excellent compatibility and abundant active functions on the surface for immobilization of laccase.

所得到的纳米复合粒子的平均粒径可达到70nm左右，接近超顺磁性，分散性好，有良好的生物相容性，而且表面有大量活性官能团(-NH_2)，是一种优良的载体材料。

The auxiliary can be recovered in high yield (81%) only by filtering and recrystallization. Besides, some other aldehydes have been chosen to test the enantioselectivity of N,N\'-dibenzyl tartamide, in comparison with two other allylaborates reagents developed previously by Roush and Brown, respectively. The results show that %e.e. of homoallylic alcohol is superior to that of the former, and approaches the Brown reagent.

产物经S_N2反应得瑞格列萘中间体-甲基烯丙基-2-氯苯基-叠氮甲烷(17)；同时，将筛选出的新型手性配体N-苄基酒石酸二酰胺用于其他几种醛(正丁醛，异戊醛和环己醛)的不对称烯丙基化反应，并与广泛应用的Roush配体(22)和Brown配体(27)相比较，发现其立体选择性优于Roush配体，并接近Brown配体，但明显具有可回收利用的优势。

We prepared bulk samples of metastable solid solutions with bcc and fcc structuresin the Fe-Cu system by using shock compression with mechanical alloying, and the magnetization and valence electron were measured and calculated. The saturation magnetic-moment curve versus mumber of electrons per atom at 0K was found to be reasonably similar to the-electrons/atom curve of other transition-metal binary systems.

用机械合金化锻压方法制备了bcc和fcc结构的块状亚稳态Fe-Cu固溶体系统，并对系统的磁化强度、价电子结构进行了测量和计算，从亚稳态 Fe-Cu固溶体的饱和磁化强度Ms-e/a曲线可看出：大约在26.2e/a的区域Ms有最大值，并且在大约28.6e/a的区域接近零。

Cinerea were observed, and the inhibition rates could reach 100% at the concentration of 20μg/mL. The sclerotium formation, sclerotium form and distribution were influenced in different extent. C8-10 presented 90% inhibition rate on sporulation at the concentration of 40μg/mL. 1227 and C8-10 surfactants could obviously increase the permeability of cell membrane over the concentration of 20μg/mL.

两者对菌丝干重，孢子萌发均有较强的抑制作用，20μg/mL时抑制率接近或达到100%；对菌核数，菌核形态及分布有一定影响；40μg/mL C8-10对该菌产孢量的抑制率可达90%以上；1227和C8-10的浓度大于20μg/mL时均能明显影响病原菌细胞膜的通透性。

Weld line is the key part of ERW steel pipe because the impact toughness of its raw material is multiple times higher than that of seamless steel pipes. The impact energy of weld line can reach 60% of the raw material by controlling impurity content in raw material, the height and direction of the burr, mold border shape, welding leg, welding speed, heating power and frequency, welding extrusion capacity, the depth and temperature of intermediate frequency, as well as air-cooled length. Seamlessness can be realized if further optimization methods are adopted.

由于ERW钢管母材的冲击韧性数倍于无缝钢管，焊缝处的冲击韧性是ERW钢管的关键，通过控制原材料杂质含量、纵剪毛刺高度与方向、成型边部形态、焊角、焊接速度、加热功率与频率、焊接挤压量、中频退伙温度与深度、空冷段长度等工艺参数保证了焊缝的冲击功达到母材的60%以上，如进一步优化，可实现焊缝冲击功接近母材，从而实现性能无缝化。

Experimental results show that the zero effort miss vector calculated by using approximate formulas is close to the real miss vector. Under the conditions of small initial errors, the satisfied results can be obtained by approximate function. The zero effort miss vector obtained can be used for the preliminary design and analysis of kinetic interceptor guidance.

测试结果表明该近似算法得到的零控脱靶量与真实值比较接近，在较小初始偏差条件下，简化的近似计算公式能给出满意的结果，所得零控脱靶量可用于空间动能拦截制导系统的初步设计与分析。

Ham. ex Roxb., Tithonia diversifolia A. Gray., ect. are found to meet the first-class organic manure standard; 40 species such as Eupatorium odoratum L., Eupatorium catarium Veldkamp., Eupatorium adenophorum Spreng., Conyza canadensis L. etc met second-class organic manure standard; 4 species such as Ageratum conyzoides L., Blumea balsamiferae DC., Conyza japonica Less., Centipeda minima L.

常见的革命菜、一点红、苦菜、地胆草和鬼针草5种菊科野菜，其营养价值可与栽培蔬菜媲美，部分种类野菜的营养成分含量甚至超过栽培蔬菜：革命菜、一点红、苦菜和鬼针草的粗蛋白含量均超过栽培的茼蒿，粗纤维含量与茼蒿及白菜中含量接近；5种野菜的维生素C含量均高于白菜。

Such calibrated ages, given by CALIB versions, are close to the calendrical true ages in full play. Thus, this is beneficial to better reconstructing the regional geochronologic history since the late Late Pleistocene and such calibrated ages can be compared directly with the archaeological evidence and other absolute dating results as well.

文章经统一校正的年龄，最大限度地接近其太阳历纪年的&真实&年龄，从而有助于更加准确地重建该地区的晚更新世晚期以来的地质年代史，并可与考古纪年及其他测年方法获得的绝对年龄直接对比。

Such calibrated ages, given by CALIB versions, are close to the calendrical 'true' ages in fall play. Thus, this is beneficial to better reconstructing the regional geochronologic history since the late Late Pleistocene and such calibrated ages can be compared directly with the archaeological evidence and other absolute dating results as well.

文章经统一校正的年龄，最大限度地接近其太阳历纪年的&真实&年龄，从而有助於更加准确地重建该地区的晚更新世晚期以来的地质年代史，并可与考古纪年及其他测年方法获得的绝对年龄直接对比。

During the development of dental germ, enamel matrix proteins secreted by epithelial root sheath could induce dental follicle cells to differentiate towards cementoblast and form acellular cementum finally on the surface of tooth root. Many researches of domestic and oversea scholars suggest that enamel matrix proteins could effectively induce periodontal regeneration, and the structure and function of this regenerated tissue are similar to healthy periodontal tissue. Moreover, the regeneration process is nearly the same to that of embryonic development of periodontal tissue.

自发现釉基质蛋白可诱使牙囊细胞向成牙骨质细胞方向分化并在根表面形成无细胞性牙骨质以来，国内外学者做了大量研究，结果表明釉基质蛋白能有效诱导牙周组织的再生，且这种再生组织的结构和功能更接近于健康的牙周组织，并且再生过程也与牙周组织的胚胎发育过程类似。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。