查询词典 stem

Therefore, the torque required to open the gate valve required torque than the closure of large, in addition, for a pair of contact between the sealing surface, the Non Rising Stem Resilient Seated Gate Valves coefficient of static friction between them than the dynamic friction coefficient, to make them from the static state generate the relative movement is required to exert greater force to overcome the static friction; due to temperature changes, so that the sealing surface pressure between the larger, need to overcome the static friction force also will be bigger, so that when you open the valve on the stem nut on the sometimes increase the torque exerted a lot.

所以，开启闸阀所需的力矩比关闭闸阀所需的力矩大，此外，对于一对互相接触的密封面来说，它们之间的静摩擦系数也比动摩擦系数大，要使它们从静止状态产生相对运动，需施加较大的力以克服静摩擦力；由于温度变化，使密封面间的压力变大，需要克服的静摩擦力也随之变大，从而使开启闸阀时，对阀杆螺母上施加的力矩有时会增大很多。" Moment analysis of valve operation "是由中国闸阀网提供的国际阀门新闻，译文仅供参考。另外，中国闸阀网还提供相关产品搜索：闸阀型号、闸阀价格、闸阀技术、闸阀新闻、闸阀生产商等。

Results: 1. A collarless press fit canine femoral stem of CFRPSF composite (elastic modulus was 40 GPa, containing carbon fiber 30%) using HA (50%) and PSF (50%) composite for surface coating was made. Directions of carbon fiber in the stem were similar to the arrangement of trabeculae of proximal femur.

实验结果：1。用弹性模量为40GPa，碳纤维含量为30％的聚砜复合材料，制造出纤维排列方向模拟股骨上段骨小梁走行，表面涂层为羟基磷灰石50％/聚砜50％混合物的压配型狗人工髋关节股骨柄假体。2。

The patients achieved complete remission after induction course would enter the next grouping:the patients,aged 15-45 years, who had suitable donors and transplantation will were assigned to allogeneic stem-cell transplantation,and for the rest,they would be assigned to accept chemotherapy or autologous stem-cell transplantation randomly.CT and ASCT group both received early intensification and consolidation therapy orderly,which contained high-dose methotrexate,intermediate/high-dose cytarabine and high-dose or high-fraction cyclophosphamide,followed by ASCT or re-induction,later consolidation and maintenance chemotherapy for CT group.

符合入组条件的成人非Ph+ALL患者纳入研究，患者接受标准VDCP±L诱导治疗达到完全缓解(complete remission，CR)后进入下一阶段分组研究：年龄≤45岁，有合适供者及移植意愿者接受异基因造血干细胞移植allogeneic stem cell transplantation，Allo-SCT其余患者根据意愿分别接受自体造血干细胞移植(autologous stem cell transplantation，ASCT和化疗Chemotherapy。

Then we hypothesize that mesenchyma stem cells from DAC are heterology,which have the potential ability to regenerate root/periodontal complex structures as a new kind of seed cells. Therefore, this study focuses on characteristics of the mesenchyma stem cells at tooth root developing stage and the evaluation of the possibility of being seeds cells.

因此，本研究拟对牙根发育期相关间充质干细胞的生物学特性进行研究，探讨其作为种子细胞在牙根/牙周组织工程中应用的可行性，以期为组织工程化牙根/牙周组织构建优选新的种子细胞。

To share supplies that might help researchers answer some of these questions, the Harvard Stem Cell Institute established a core facility in July to store and distribute patient-specific stem cell lines.

为了分享可能有助于解答此类问题的资源，哈佛大学干细胞研究所于今年7月建立了一项核心设施，以便储存和分发各种不同病人的干细胞。

The team, who presented their results at a joint meeting of the American Association for Cancer Research and the International Association for the Study of Lung Cancer in Coronado, California, this week, are now investigating whether their putative cancer stem cells are more resistant than run-of-the-mill cancer cells to chemotherapy or radiation, as research on other putative stem cells has suggested.

本周，在加利福尼亚州科罗纳多举行的美国癌症研究学会和国际肺癌研究学会联合会议上，该小组公布了他们的研究结果。他们现在正在研究假定的肿瘤干细胞是否像其他假定干细胞上的研究显示的一样，比普通癌细胞更耐化疗及放疗。

Gel-blot analysis of RNA isolated from cucumber leaf, root, stem and flower showed that the abundance of CuATP mRNA was low or no in root, moderate in stem and flower, and higher in leaves.

CuADC的表达分析表明CuADC在黄瓜中以单拷贝形式存在，在花和根中的表达量较大，茎叶中较少，不同品种间也存在差异，对胁迫的响应各不相同，"花打顶"后其表达量增加。

The distribution of the qualitative characters The performance of the 39 chief qualitative characters were observed and recorded,according to the test method of morphological characters in the .The results of distribution proportion of each character in cultivars group showed that the distribution of 32 characters(number of ray flower rings,floret curliness,shape of leaf base,size of stipule and so on) were very asymmetrical with near or above 70%cultivars concentrated upon one or two performance, however,the distribution of the other 7 characters(floret type,surface color of outer floret,back color of outer floret,color of disc floret,claw in base of sinus between lateral lobes,stem erectness and stem color) in the cultivars group were relatively symmetrical.

质量性状分布参照《菊花DUS测试指南》的形态性状测试方法，观察记录大菊39个主要质量性状的表现，计算各性状的表现式样在品种群内的分布比例，结果显示舌状花的重瓣性、花瓣曲反状况、叶片基部性状、托叶大小等32个性状的表现式样在品种群内分布极不均匀，接近或超过70%的品种集中在性状的1种或2种表现式样中；而花瓣形状、外花瓣表面色、外花瓣背面色、花中心部颜色、叶裂刻基部有无突起、茎的曲直性和茎色等7个性状的表现式样在品种群内的分布则相对均匀。4。

New cells are cut off on the lower side to form new stem tissue at the stem apex, and on both sides in the root apex to form root tissue and a protective root cap.

顶端分生组织产生的新细胞沿根或茎的长轴方向排列，沿其长轴方向增加细胞的数目。

The influence of oligosaccharides biocide on bacterial colony in the stem of Chinese Cotton 12 was determined by routine separation mathod.The results of two groups experiments indicated that the number of bacterial colonies in the cotton stem,wtich were treated with the oligosaccharides,was lowerthan the control group;and it dropped significantly(8.0×107CFU/g)after treating 10 days,while the control group was 4.2×109CFU/g.This results illustrated that the oligosaccharides biocide could control the cotton damping-off,and as a equaled 0.05,the oriental difference was significant.

通过常规分离方法，测定寡聚糖生物农药对中棉12品种的棉茎体内细菌群落数量的影响。2批实验结果表明喷寡聚糖后棉茎体内细菌群落数量均低于对照，喷寡聚糖10 d后棉茎体内细菌群落数量显著下降(8.0×107CFU/g)，对照4.2×109CFU/g；寡聚糖生物农药对棉花苗期病害的防治效果实验结果表明：寡聚糖生物农药对棉花苗期立枯病有一定的防治效果，且在α=0.05水平差异显著。

Use nationalization degree and the relationship that commercialize degree, condition of calculable market economy plays scope of optimal and state-owned economy.

利用国有化程度与市场化程度的关系，可计算市场经济条件下最佳国有经济规模。

The kinds of extractant also effected desulfurization rate .

萃取剂对脱硫率的影响也很大，乙二胺的萃取效果优于甲醇的。