根段

In the study, embryo bud of Impatiens balsamina L was cultured on hormone-free MS medium for promoting, MS medium with 6-BA 3 mg/L+NAA 0.5 mg/L for shoot and root formation, and MS medium containing 6-BA 3 mg/L+NAA 0.5 mg/L for flowering respectively. During about 60 days, plant regeneration and flowering of Impatiens baisamina L was finished in vitro.

研究以凤仙花无菌苗胚芽段作为外植体，经过不含任何激素的MS(0)培养基预培养、MS+6-BA3mg/L+NAA0.5mg/L培养基的诱导芽和根分化、MS+6-BA1mg/L+NAA0.1mg/L培养基的诱导开花，在60d左右实现了凤仙花离体培养再生植株并在试管内开花。

By the method of in situ hybridization, the distribution of mRNA of RSG6 was detected. The result showed that the transcript activity began at the late unicellular stage microspore, increased at the bicellular pollen, and was most vigorous at the two sperm cells in mature pollen.

用地高辛RNA标记试剂盒，采用体外转录方法标记RSG6基因的cDNA序列中长度为258bp的一段作为反义RNA探针，运用RNA原位杂交技术，探讨了RSG6基因的mRNA在水稻根、茎、叶以及花药发育各阶段组织中的分布情况。

The cervicothoracic junction is a transitional area where the cervical spine lateral masses decrease in size and the vertebral pedicles increase in size within the thoracic region.

颈胸段是颈椎侧块减小向胸椎椎弓根增大的过渡区域。

Depending on the clinical situation, the goals of such surgery may include spinal cord or nerve root decompression, restoration of sagittal alignment, and avoidance of complications such as pseudarthrosis, anterior graft dislodgement, and adjacent segmental degenerative disease.

跟据临床情况，这些手术的目的可能包括脊髓或神经根减压、矢状面排列的恢复和避免并发症，如假关节形成、前方植骨块的脱出和临近节段的退行性疾病。

Depending on the clinical situation, the goals of such surgery may include spinal cord or nere root decompression, restoration of sagittal alignment, and aoidance of complications such as pseudarthrosis, anterior graft dislodgement, and adjacent segmental degeneratie disease.

跟据临床情况，这些手术的目的可能包括脊髓或神经根减压、矢状面排列的恢复和避免并发症，如假关节形成、前方植骨块的脱出和临近节段的退行性疾病。

By using a piece of 50-60mm tube,vertical opening and then press it averangely until it completely flated on the parallet steel sheet,without any visible cracking or flaws.

将一根长约50-60mm的钢管纵向剖开，用均匀压力使焊接区的管段在平行的钢板之间完全压扁，焊接区不得有明显的裂痕或残缺。

Methods Since 1998,57 cases traumatic thoracolumbar fracture had been oprated by inserted pedicle screw system,posterior decompressive intertransverse process bone fusion,45 patients had been followed up for 16 months(6～22 months)on average.

1998年以来，我院采用椎弓根钉系统内固定，后路减压后外侧植骨治疗胸腰段脊柱骨折57例，其中45例获随访，平均随访16个月（6～22个月）。

The surgery consisted of one-stage posterior transpedicular eggshell technique, and then expanded the eggshell to the adjacent intervertebra including apex vertebra and both cephal and caudal wedge vertebra combined with their posterior elements, after completion of the VCR, instruments were added to achieve temporary stability.

均采用单纯后路扩大&蛋壳&技术切除侧后凸顶椎（包括顶椎邻近的头尾侧楔变的脊椎），截骨节段上下方各应用2~3对椎弓根螺钉固定，通过器械加压矫形关闭切除后形成的间隙观察手术前后侧后凸的矫正率、术中脊柱短缩、术后站立位身高变化及术后整体平衡情况。。

1CHEN Kangli, 2YAN Meijuan, 1ZHANG Ying （1Department of Biochemistry and Molecular Biology, Shanghai Medical College, Fudan University, Shanghai, 200032; 2Jiangsu Key Laboratory of Neuroregeneration, Nantong University

目的：观察β1，4-GalT I mRNA在坐骨神经损伤后相应节段脊髓和背根神经节中的表达变化。方法：采用real-time

Low concentration of NAA could significantly promote rooting and development,but,not significantly in clear water.

在1/10Hoagland营养液中低浓度的NAA能显著促进豆腐柴茎段生根和根系发育，但在清水中NAA对根的生长促进作用不显著。

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。