查询词典 drilling stem

The results of this study indicated that L. gmelinii would transform each other at the different age and its transformation rate was 38.9% where the average stem was 50%, and the dominating stem and overtopped stem were all 33.3%.

结果表明，兴安落叶松分级木在不同年龄阶段有相互转换现象，其转换率38.9%，其中，平均木转换率占50%，优势木和被压木转换率均33.3%。

Prop root An adventitious root, arising from one of the lower nodes of the stem close to the soil surface, found at the junction of stem and soil that grows dowm to the ground and gives additional support to the stem, as seen in maize.

支柱根：一种不定根，起源于接近土壤表面的茎上位置较低的节部。向地生长，插入土壤，并对茎提供一定的支撑。如玉米的支柱根很常见。

Results Trunk neural crest stem cells were successfully isolated and cultured. The immuocytochemcal result showed that the cells were nestin-and P75-positive. Trunk neural crest stem cells grew through adhering to chitosan fiber after inoculation. Under an electon microscope, the spindle-shaped trunk neural crest stem cells were proliferated and migrated along the fiber. The cells arranged side by side or linked by heads and tails in processes. The ends of S-100 positive cells were flat and expanded, adhering to the fiber as claw-shaped pseudopodium.

结果 采用神经管植块法培养的神经嵴干细胞，免疫细胞化学染色呈现nestin及P75双阳性，将其接种在壳聚糖纤维支架材料上，可见神经嵴干细胞贴附于壳聚糖纤维上生长；S-100免疫细胞化学染色显示，S-100阳性细胞突起的末端呈扁平状膨大；扫描电镜显示，壳聚糖纤维上的躯干神经嵴干细胞为梭形，呈现"端对端"、"肩并肩"排列，伸出爪形伪足贴附于壳聚糖纤维上。

Based on the data and materials collected from many years investigation over the sample plots in Daemonorops margaritae plantation in Daqingshan, Guangxi Province, this paper established a model for its stem length distribution by choosing three growth equations and using a method of twice curve fitting to describe the rule of length distribution for mother stem and sucker stem.

对广西大青山黄藤人工林固定样地进行调查和收集资料，选择Logistic、Weibull和Richards 3种理论生长方程，采用两次曲线拟合法分别描述母茎长和萌茎长结构规律，旨在建立黄藤人工林茎长分布模型。

This article introduce the history, characters of tumor stem cell, and the relationship with body stem cell, review the meaning of tumor stem cell thory on tumorous cilinic.

本文介绍了肿瘤干细胞的历史、特征以及与成体干细胞的关系，最后对肿瘤干细胞理论在肿瘤临床的意义进行了初步的阐述。

Methods Serum containing achyranthes root was prepared, human mesenchymal stem cells were separated and amplified, MTT assay was used to access the effects of serum containing achyranthes root on human mesenchymal stem cells in vitro, alkaline phosphatase and osteocalcin were assayed to reflect the variations of stem cell differentiation, and the expression of osteogenic transcription factors with RT-PCR.

制备牛膝含药血清，分离与扩增人间充质干细胞，MTT法检测牛膝含药血清对体外培养的间充质干细胞增殖作用的影响，检测碱性磷酸酶与骨钙素以反映细胞分化水平的改变，RT-PCR检测成骨相关转录因子的表达。

The pomegranate scab and fruiting pathogen are belonged to same pathogen and deduced the pathogen infect to pomegranate stem or limb at first and infect calyces and fruit second, the pathogen of pomegranate stem rot mainly infect stem or limb, whether the pathogen infect fruit and produce symptom or...

结果表明：石榴疮痂病与石榴果实上增生型症状的病原菌具有更近的亲缘关系，应为同一病原菌引起，推测该病原菌首先侵染石榴侵染枝干，然后侵染石榴的花萼和果实；而石榴干腐病病原菌主要侵染枝干，是否侵染果实及引起症状特征需要继续进行研究和鉴定。

Bone marrow containing hematopoietic stem cells has already been known , theses another group stem cells exists in bone marrow named mesenchymal stem cells. MSCs retain the potentiality of differentiating into osteoblast, chondroblast, adipoblast, tendonblast, myoblast, cardiomyoblast, neuron, etc , which displays a bright prosperity of its use in tissue enigeering, wound healing , cell transplatation and gene therapy. MSCs can be obtained and expanded easily compared to ESC without any problems of morality , law and ethic , immunology.

最早在130年前，德国病理学家Cohnheim在研究创口愈合时就推测在创口愈合过程中出现的部分细胞可能来自骨髓。20世纪70年代，Friendenstein发现一小部分骨髓中贴壁最牢固的细胞经数此传代后形成独特的纺锤形外观，具有形成成骨细胞或软骨细胞的能力。80年代以来，许多研究小组进一步证实了Friendenstein分离到的这些细胞是多能的，在体外特定诱导条件下，可以分化为成骨细胞、软骨细胞、脂肪细胞、成肌细胞、神经元等，被称为骨髓间充质干细胞(Bone MarrowMesenchymal Stem Cells，MSCs)。

The place and time of cell proliferation are just in accordance with those of the appearances of stem cells and stem-cell blastemas, which means that cells in those areas mentioned above dedifferentiate forming stem cells which proliferate too.

这些分裂细胞在位置和时间上与干细胞及干细胞原基的出现一一对应，表明上述几处发生了细胞的脱分化，形成了干细胞，进行着细胞增殖。

In Fagopyrum esculentum grown under different density and sowing date, there was significant plasticity in stem mass ratio, leaf mass ratio and leaf to root ratio, as well as single measures of stem length, stem diameter, branch length and number of branches.

在不同密度和播期下种植的荞麦，茎生物量分配、叶生物量分配、叶根比，及单株茎长、茎直径、分枝长和分枝数都有显著的可塑性。

I want to be a big fish in a small pond.

我要做一条在小池塘里的大鱼。

While the software functioned well, we did not feel the same about their customer support!

虽然该软件运行良好，我们没有同样的感觉他们的客户支持！