中轴的

Xingtai city Hengpeng Bicycle Co.,ltd is a large enterprise,we specialized in designing,developing and manufacturing bicycle,children cycle and electric cycle parts.Our main products are "HENGPENG""LUCHI""LANHUA""MOLIBAOBAO" brand children cycle,spoke, Nipple ,Freewheel,Peda,,saddle.Our products not only sold well spreading over 20 provinces and cities,but also form a complete set with appointed factory.We own self-dealing export right and sold far to more than 30 countries and regions.At the same time enjoy a good reputation in domestic and foreign market.

邢台恒鹏车业有限公司是专业研发制造童车、自行车、电动车整车及零配件的著名企业，主要生产"恒鹏"、"陆驰"、"兰花"、"茉莉宝宝"牌儿童自行车、辐条、摇摆车、宝宝椅、气筒、中轴、前后轴、车筐、鞍座、脚蹬等，并拥有自营出口权，产品畅销国内20多个省市地区，远销世界30多个国家，在国内外市场享有效高知名度。

B Of the six basic media MS, MS1/2 (half-strength of MS salts and vitamins), WPM, DKW, B5 and SH, MS1/2 was the most proper one to induce somatic embryos. Somatic embryos generally regenerated directly from excised zygotic cotyledons. PGRs combination affected somatic embryogenesis significantly. Medium with NAA 1mg/L, TDZ 0.05mg/L, IBA 2—10mg/L combined with BA 10mg/L, or IBA 10mg/L integrated with BA 0-2mg/L gave the highest induction rate. Excised zygotic hypocotyls had the strongest potential to produce callus. Callus induction was also affected significantly by media and PGRs. The proper callus induction condition was MS1/2 medium containing NAA 1mg/L, IBA 10mg/L, BA 2-5mg/L and TDZ 0.05mg/L. Harvest period affect somatic embryogenesis significantly. Zygotic embryo explants collected from the end of July to the middle of August had strong potential to generate somatic embryos, when endosperm finished solidification, different parts of the embryos were completely formed, the size of embryos occupied about 2/3 of the embryo sac. Provided with optimized conditions, direct somatic embryogenesis rate can attain to 33. 68%, and callus induction rate of hypocotyls was up to 90.7%. Cytological observation on megasporogenesis and zygotic embryogenesis of Manchurian ash showed that the ovary was twicarpellum, twilocular with two ovules each loculus. The ovule was tenuinucellar and anatropous, with one megasporcocyte. The development of embryo sac is of the Polygoum type.

体细胞胚胎发生研究的结果表明：(1)成熟过程中的合子胚是诱导水曲柳体细胞胚胎发生的最佳外植体材料；(2)在所试验到的MS、MS1/2（将MS的所有成分均减半）、WPM、DKW、B〓、SH等六种基本培养基中，MS1/2是最适合诱导水曲柳体细胞胚胎发生的基本培养基；(3)水曲柳的体细胞胚胎发生以直接发生为主，体细胞胚主要来自于从合子胚分离的完整子叶；(4)培养基中的激素组合对水曲柳的体细胞胚胎发生有显著影响，诱导直接体细胞胚发生较好的激素组合有NAA 1mg/L+IBA 2，5，10mg/L+BA 10mg/L+TDZ 0.05mg/L和NAA 1mg/L+IBA 10mg/L+BA 0，2mg/L+TDZ 0.05mg/L；(5)合子胚分离的下胚轴具有最强的愈伤组织诱导潜力，少数愈伤组织可以分化出体细胞胚；(6)愈伤组织的诱导也受培养基和激素配比的显著影响，最适宜诱导的培养条件为MS1/2+NAA 1mg/L+IBA 10mg/L+BA 2，5mg/L+TDZ0.05mg/L；(7)采种时间对体细胞胚胎发生有显著影响。7月末到8月中旬的合子胚具有较强的体细胞胚发生潜力，此时种子尚未成熟，胚乳已呈固态，种胚的各个部分已分化完全，种胚体积占胚腔的大约2/3；(8)在各自综合的最适条件下，完整子叶的体细胞胚诱导率可达33.68%，下胚轴的愈伤组织诱导率可达90.7%。

The propagation of elegant cosh-squared-Gaussian beams has been investigated and the analytic solutions have been obtained by means of an angular spectrum technique in uniaxially anisotropic crystals.

基于光束在单轴晶体中传输的角谱理论，对复宗量双曲余弦平方-高斯光束在单轴各向异性晶体中的传输作了研究，得到了一般的解析传输公式，并用数值的方法讨论了晶体内源于复宗量双曲余弦平方-高斯光束的两偏振分量的传输特性，结果表明，在适当参数的条件下，两偏振分量在晶体中的传输波形结构基本保持不变。

Dielectric cylinders of unknown permittivities are buried in one space and scatter a group of unrelated waves incident from another space where the scattered field is recorded.

设一未知的不均匀双轴性介质复杂物体掩埋在其中一空间中(不论是在半空间或三层空间中)，吾人可在另外的空间中适当的安排一组具有不同入射和极化方向的无关联波照射物体并量测在此之散射场，利用简单的矩阵运算，我们就可以克服非线性和不良情况的发生的困扰，进而重建双轴性复杂物体的介电常数分布。

This text is introducing the most popular product in engeneering machine ZL30 forklift 'transmission case in the function as well we introduce the principle of the design of transmission case .together with the main parts in transmission ,such as the fluid strength ,the overdrive clutch,the structure of planet rowand so on. and in the detailed introduction ZL30 forklift the overdrive clutch and the output shaft design process, and proposed in four axes design's improvement measure.

本文主要介绍了工程机械中应用最广泛的ZL30轮式装载机的行星式变速箱的功能和总体设计思想，并介绍了其中主要零件如：液力变矩器、超越离合器、行星排结构的用途和功能，并详细的介绍了ZL30装载机中超越离合器和输出轴的设计过程，并提出了四轴设计中的改进措施。

The determination of analysis and improvement scheme of structure defects in pipe cold-drawing machine

针对原半轴齿轮精锻模结构和生产中存在的问题，对半轴齿轮精锻过程进行了初步分析，提出了新的模具结构和半轴齿轮结构的改进方

The purpose of this study was to determine the relationship between abscisic acid and the development and germination of the seed of Pachira macrocarpa.

结果表明：马拉巴栗种子发育过程中，种皮、子叶和胚轴的ABA含量先升高，后下降，最高值出现在花后50 d，最高值分别为791.45、352.68和567.85 ng/g，种皮中ABA具有向内扩散的趋势，含量始终高于子叶和胚轴。

Flying wing design of center column locking knob,which can adjust the height of center column more laborsaving and more convenient.

中轴锁紧钮的飞翼形设计，可更省力更方便的调节中轴高度。

Flying wing center column locking knob Flying wing design of center column locking knob,which can adjust the height of center column more laborsaving and more convenient.

捷宝MX-1227+KK-2T云台赠价值58元电子快门线 730.0元捷宝镁铝合金优惠套装猎豹急锁MX1227+KK-2T云台：中轴锁紧钮的飞翼形设计，可更省力更方便的调节中轴高度。

The sensitiity of leukocyte scintigraphy in detecting chronic osteomyelitis in the peripheral skeleton was 84%(95% confidence interal, 72% to 91%) compared with 21%(95% confidence interal, 11% to 38%) for its detection of chronic osteomyelitis in the axial skeleton. The specificity of leukocyte scintigraphy in the axial skeleton was 60%(95% confidence interal, 39% to 78%) compared with 80%(95% confidence interal, 61% to 91%) for the peripheral skeleton.

白血球闪烁显像在检测慢性骨髓炎中对于外周骨的敏感性为84％（95％可信区间为72％-91％），而其对中轴骨的敏感性为21％（95％可信区间为11％-38％），白血球闪烁显像在检测慢性骨髓炎对中轴骨的特异性为60％（95％可信区间为39％-78％），而其对外周骨的特异性为80％（95％可信区间为61％-91％）。

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。