转数

Elevating the valid time of using the cell, and using the cell more rationally. The MCU AT89C51 was used as its main CPU and combined with display module, A/D converter, expended memory and watch dog technology in order to satisfy the need; a new type of infrared wireless technology was used to transmit the data collected and was given the real circuit design picture.

能更有效、合理地使用和保养电池组，提高电池使用寿命；该系统采用单片机主机AT89C51结合显示、模／数转换、扩展存储和看门狗技术；数据传输采用RS-232串口转红外无线技术进行传输，并给出了具体电路设计图示。

In this system,the VVVF(variable voltage variable frequency) control method based on magnetic flux trajectory is applied.In the system,it is the target for the magnetic flux linkage polygon to be greatly approximate to the ideal magnetic flux circle.Considering such limitations as the low speed torque ripple,high speed real time and the working frequency of switching element,through the subsection synchronization control method by applying different numbers of magnetic flux linkage polygon for different frequency range,the perfect precision specifications for speed can be obtained.

系统采用基于磁通轨迹法的他控式变频调速方案，以磁链多边形尽量逼近理想磁通圆为目标，并考虑低速转矩脉动、高速实时性和开关元件的工作频率限制等约束条件，通过采用分段同步控制方式，在不同的频段采用不同的磁链多边形边数，使系统获得了优异的转速精度指标。

Showed that one needed a small Rossby number in order for the geostrophic balance to be justified.

说明被证明的地转平衡需要小的罗斯贝数。

ET1 content in lung homogenate get to the peak at 2 h and then started to decrease.

统计分析表明匀浆和血浆各自ET1的均数在转流前后差异有统计学意义。

G/ml. After wt-p53 transfection and VCR treatment, the number of Bel-7402 cells was decreased; the cells were swollen severely with irregular projections; pyknosis, karyorrhexis and karyolysis were observed. After wt-p53 transfection, the expression of mdr1 and P-gp in Bel-7402 cells was down-regulated remarkably, and the expression of TopoⅡα was up-regulated.

形态学检查转染细胞，在VCR作用下细胞数明显减少，细胞散在不成片、细胞高度水肿、胞体不规则突起，可见核固缩、核裂解、核溶解。p53基因对Bel-7402细胞的mdr1/P-gp的表达有明显的抑制作用，对TopⅡα基因的表达有上调作用，对GSTπ、MRP基因表达没有影响。

Methods Mating was conducted at 25℃ in saline between E.coli B101(RP4) and Salmonella aberdeen Kauffmann 50312 without stirring and the donor per recipient ratio was 1:3 constantly.

接合供体菌为大肠埃希菌-HB101(RP4)，受体菌为Salmonella aberdeen Kauffmann 50312，保持供、受体菌液浓度比例为1：3，25℃静止接合相应时间后，计算转接合子数。

The elder age,underlying diseases,continued high fever, thrombocytopenia,leucocytosis and bilateral lung involvement were the risk factors.

伴发糖尿病与预后转归显著相关，外周血淋巴细胞数下降、血小板减少、血清LDH和CPK升高与预后均有相关性。

By doing so, the dimension of attribute can be reduced effectively, the noise can be filtered successfully and the underlying semantic structural relation will be stressed.(3) The dissertation carries on expanded research on double-bases cooperating mechanism in terms of pattern, discusses and proves the important structure mapping theorem of the above mechanism.

该方法通过小波变换及潜在语义索引算法将向量空间模型中的"特征词项空间"转化为Hilbert子空间——"概念空间"的范畴，从而有效地降低了特征项维数、过滤掉文本数据中的噪声、突出了文本数据的深层语义结构关系。

The study included all neonates who were 34 weeks obstetrical estimated gestational age or less born between January 1, 2003 and November 30, 2007 at the Parkland Memorial Hospital in Dallas. Researchers excluded infants who were nonviable, transferred from other nurseries, or had missed critical data points. Of the 2183 newborns included in the study, more than half were hypothermic, defined as a rectal temperature of less than 36.5 °C. Euthermia was defined as a rectal temperature of 36.5 °C to 37.5 °C.

该研究包括了在2003年1月1日至2007年11月30日之间于达拉斯Parkland纪念医院的所有估计怀孕周数34周以下的新生儿；研究者排除无法自力生长的婴儿、从其它护理单位转来的婴儿、或者缺乏重要资料的婴儿；总共有2，183名新生儿纳入此研究，超过半数为低温；低温定义为肛温小于36.5 °C，适温定义为36.5 °C 至37.5 °C；St。

The mathematical model between position error and north seeking error is gotten through error theory and partial derivative principle.

运用误差理论和偏导数原理，推导出转位误差与寻北误差二者之间的关系模型。

What are your goals and strategies for growth?

你的成长目标和策略是什么？

And unto the angel of the church in Sardis write; These things saith he that hath the seven irits of God, and the seven star I know thy works, that thou hast a name that thou livest, and art dead.

3：1 你要写信给撒狄教会的使者，说，那有神的七灵和七星的，说，我知道你的行为，按名你是活的，其实是死的。