水平曲线

The central integrative part of the baroreflex receives afferent information not only from the sino-aortic baroreceptors, but also from various other sources. The present study was to investigate the effect of somatic nerve stimulation on baro-reflex. The exoeriment was performed in α-chloralose-urethane anesthetized rabbits. Intrasi- nusal pressure -mean arterial pressure res- ponse curves were constructed.

在自然状态下，各种传入冲动汇集中枢，很多传入冲动都可影响压力感受性反射，使压力感受性反射受到调制而发生重新调定·本实验旨在观察刺激躯体神经对压力感受性反射的重调定并分析其机制·实验在α-氯醛糖和氨基甲酸乙酯混合麻醉的家兔上进行，利用颈动脉窦灌流技术测量不同窦内压时体循环平均动脉压的水平，并画出窦内压-体循环平均动脉压反应曲线。

Find the points on the curve at which the tangent line is horizontal.

1- ++。若该曲线在某点有水平切线，求该点的坐标。 8 分

The 20 hair at the beginning of the exemple diagnose the method 2 model dextrose of profess to convinced of DM patient go ahead of the rest is able to bear or endure the quantity experiments , morrow or tertian add before doing OGTT take Nai of RG2mg , the insulin that determines to set calm time to nod each and blood sugar level, observe the difference of result of earnings of method of 2 kinds of experiments and correlation, the ratio that compares the Ins between 2 kinds of experiments to release net rise in value of net rise in value of peak value, Ins and blood sugar of △ I/△, Ins releases times rise in value and Ins release the area below the curve .

方法20例初发诊断的2型DM患者先行口服葡萄糖耐量试验，次日或隔日在做OGTT前加服RG2mg，测定各设定时间点的胰岛素和血糖水平，观察2种试验方法所得结果的差异和关联，比较2种试验间Ins释放峰值、Ins净增值和血糖净增值的比值、Ins释放倍增值以及Ins释放曲线下面积。

Three horizontal resistance QTLs, termed PRQ1, PRQ2 and PRQ3, located on linkage groups C, P and N, respectively, were identified for area under the disease progress curveand for percentage of pustule area versus total leaf area in field and together explained 27%of the phenotypic variance.

用病斑面积占总叶面积的百分率和病害发展曲线下的面积作为抗病指标，在田间试验中分别探测到3个燕麦冠锈病水平抗性的QTL，依次命名为PRQ1，PRQ2和PRQ3。这3个QTL分别位于连锁群C，P和N上，总共可解释27%的表现型变量。

Total cost curve - A graph depicting the total cost of producing each level of output per time period.

总成本曲线－描述单位时段内每一产量水平对应的总成本的曲线图。

By a series of bending cyclic tests of wood-bamboo laminate under 80%, 75%, and 70% stress levels, transformation laws' curves of the damage variable were measured at three different maximum stresses.

通过对竹木复合层合板在80%、75%和70% 3种应力水平下的纯疲劳弯曲试验，得出其损伤变量变化规律的实验曲线。

Either in binomial or in trinomial regression, the regression coefficient reached the significant correlation at 0.01 levels, which means the growth ring age has intense influence on the microfibril angle.

枫杨微纤丝角与生长轮年龄的关系无论是进行二项式回归还是三项式回归，回归曲线拟合性都很强，复相关系数都达到0.01的极显著水平，表明微纤丝角受生长轮年龄的影响十分强烈。

The 〓～t curve of UF with periodic back flush can be divided into two sections: the initial section represents the accumulation stage of undetachable cake layer, and the final section represents the equilibrium stage of accumulation and detachment of cake layer.

对周期反冲洗膜污染过程分析结果表明，周期反冲洗超滤〓～t曲线可分为两段：起初的直线增长段为不可逆滤饼层的累积阶段，直线的斜率为各次反冲洗不可逆膜阻增量△R；后期的水平段为滤饼层累积与剥离达到平衡的阶段。

The experimental results indicate that mass concentration of particulate shows unimodal distribution and the peak point lies at 20°CA ATDC.

结果表明，微粒质量浓度曲线呈单峰状，峰值出现在上止点后约20℃A ATDC。在燃烧后期，约70%～80%碳微粒被再次氧化；此后微粒质量浓度接近于排放水平。

Since then, the supply curve has become more and more inelastic and is approaching verticality at a level above 82 million barrels per day--approximately current usage.

自那以后，供应曲线已经变得愈来愈没有弹性，而且还在每天高于8，200万桶的水平上

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。