根的

Aiming at the problem of the odd point in the calculation of rotors torsional vibration characteristics by using the improved Riccati method, this paper presents a new viewpoint about how to confirm and remove the lost root and the added root of equation.

本文针对采用改进型Riccati方法计算轴系扭振特性中所出现的奇点问题，提出还需检测判断剩余量与振型，从而进一步确定和排除方程"漏根"和"增根"的方法。

It is frequently quoted as an important argument of Morgan on the relation between the nation and the gentes.

"在氏族制度下，民族尚未兴起"，摩尔根的这句话，中国学术界十分熟悉，它经常被引用，被认作是摩尔根论及"民族"与"氏族"关系的一个重要观点。

HFS Morgan's grandson, Charles Morgan, spoke of the car's elegance through minimalism.

痉挛摩根的孙子查尔斯摩根，以汽车的优雅通过极简。

There are three categories of maturity indicators of organic matter in current petroleum industry to evaluate the degree of thermal evolution for source rocks, including: 1 optical indicators, i.e., vitrinite reflectance, bitumen reflectance, sporopollen color and thermal alteration index, conodont color alteration index, and reflectance of fossil fragments; 2 chemical indicators, i.e., the maximum temperature in pyrolysis of organic matter, methyl phenanthrene indicator, the atomic ratio of H/C, carbon isotope indicator, and biomarker indicators; 3 indicators of spectroscopy, i.e., the free radical concentration of kerogen, the average structural scale of aromatic nucleus of kerogen, and the laser-Raman spectrum of organic carbon.

摘 要：当前常用的有机质成熟度指标包括3大类：1 光学指标，包括镜质体反射率、沥青反射率、孢粉颜色、热变指数(thermal alteration index， TAI)、牙形石色变指数(color alteration index， CAI)和生物碎屑反射率；2 化学指标，包括有机质最大热解峰温度、甲基菲指数(methyl phenanthrene indicator， MPI)、H/C原子比值、碳同位素指标和生物标志物指标；3 谱学指标，包括干酪根的自由基浓度、干酪根芳核平均结构尺寸和有机碳激光拉曼光谱。

Th is w ire is as long again as that one .

这根金属线的长度是那根的2倍。

Lateral root Any ROOT that arises from the PERICYCLE of another root.

侧根：起源于根的中柱鞘的根。

Based on the nitrite catalyzed oxidation of pyrocatechol violet by potassium bromate, a new catalytic spectrophotometric method for determination of trace nitrite has been developed.

基于在磷酸溶液中，亚硝酸根对溴酸钾氧化邻苯二酚紫的褪色反应具有催化作用，建立了催化光度法测定微量亚硝酸根的新方法。

In this paper, we discuss when a quartic equation has no real roots, and obtain a necessary and sufficient condition on a quartic equation which has no real roots.

本文讨论了一元四次方程无实根的一些充分、要条件，并得到了一元四次方程无实根的一个充要条件。

The tolerant capacity of stem calli towards the ethylene inhibitor cobalt ion is lower than that of radicle calli.

朱砂根的茎愈伤组织对乙烯抑制剂Co〓的耐受性比根愈伤组织差。

The scion and radicle had different response to the salts, and the salt concentrations had more influence on the radicle.

幼根和幼芽对不同种类盐胁迫表现出不同的反应，盐浓度对根的影响较大。

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。