查询词典 second-rate

In chapter 2, we discuss the single food chain Chemostat models with constant consumption rate. We first assume that the increase rate is in direct proportion, and then we discuss the model with quadratic saturated increase rate.

第二章主要研究了消耗率为常数的情况下正比增长率的食物链模型以及二重饱和增长模型。

Coal is mainly physical adsorption to Cr〓(Ea=9. 245kJ·mol〓). When the concentration of waste water is comparatively low, adsorption rate to Cr〓 reaches 90% or so. The decolor rate is more than 63. 8% when coal depurates Rogor waste water. The COD removal rate is about 12% in purifying life-sewage using coal A.

煤在Cr〓溶液中对Cr〓主要为物理吸附（Ea=9.245kJ·mol〓），当Cr〓浓度较低时其去除率可达90%左右；煤处理乐果废水时脱色率高于63.8%；处理生活废水时COD去除率为12%左右。

The cutoff value of E2/E6, used to distinguish the pure episomal form from a mixed form of episomal and integrated HPV16 DNA, was 0.81 in the multiplex real-time PCR test. c） HPV16 existed as episomes in most of the CIN Ⅰ lesions, and 42.9% of them had mixed episomal/integrated HPV16. The integrated form of HPV16 constituted the majority in most of the CIN Ⅱand CIN Ⅲ cases. In squamous cervical carcinomas, the HPV16 was mostly integrated into the host chromosome. d） The rate of HPV16 integration was associated with the degree of cervical lesions and the rate increased with the progression of cervical disease, e） The rate of pure integrated HPV16 in stage Ⅱ and Ⅲ（88%） was higher than that in stage Ⅰ（33.3%）. Conclusions: a） Multiplex real-time PCR is a rapid and sensitive method for detection of the integration state of HPV16 DNA. b） The integration of HPV16 DNA is a very early event in the development of cervical cancer and may act as an activation mechanism for progression from preinvasive to invasive cervical cancer, c） The pure integrated HPV16 in cervical cancer may be a useful prognostic indicator.

HPV—16E2、E6标准曲线相关系数均为1.00，扩增效率均在95％以上：2）确定0，81作为多重实时PCR区分游离型和混合型HPV-16的界值、3）CINⅠ中HPV—16大多以游离方式存在，但仍有整合的发生（42，9％）；CINⅡ和CINⅢ中HPV—16以混合型为主：浸润癌中以整合型HPV—16为主。4）HPV-16整合发生率与不同程度的宫颈病变有关，并且随着宫颈病变级别的升高HPV-16整合发生率呈上升趋势-5）Ⅱ＋Ⅲ期宫颈癌中整合型HPV—16所占比例显著高于Ⅰ期宫颈癌结论：1）多重实时定量PCR是一种敏感性高、简便快速的HPV—16病毒存在状态的检测方法2）HPV-16整合是宫颈癌变的早期事件，与宫颈癌前病变的进展有关。3）宫颈癌中整合型HPV—16的发生可能具有预后价值

This paper summarizes the theory merits of latest exchange rate and combines experience and lessons of other countries on the exchange rate policy, analyzing possibility of choosing the different exchange rate system for China.

本文在总结了最新汇率理论成果和吸取了其它国家在汇率政策经验上的教训的基础上，对人民币选择不同汇率制度的可能性进行了分析。

RESULTS The cognition rate among externs about hospital infection knowledge was 56.89 %, the highest rate was the answer about the best collecting time of pathogenic samples for subsequent use of antibacterials, which was 92.2%; the lowest rate was the answer about the disinfectant monitoring time limit, which was 24.4%.

结果 实习人员对医院感染知识知晓率为56.89%，其中使用抗菌药物对病原学样本的最佳采集时间知晓率最高，为92.2%；消毒剂要求监测的时限知晓率最低，为24.4%。

In the recent years, the company has successively developed the fully servo control extra-fine metallic wire drawing machine without tension bar, stainless steel fine wire drawing and annealing machine, the true meaning constant tension and constant line rate and fully-automatic single-head and single-control annealing wire coiling machine, fully-automatic active wire laying device and inductive and constant annealing extra-fine copper wire drawing machine and other new products, which have basically solved the defects of the finished product wires manufactured by ordinary equipment that tension inequality, disordered wire arranging, incapability for anti-drawing intensity and extension rate control and low finished product rate, etc and have improved the product quality to a higher grade.

近年来，本公司相继开发出全伺服控制无张力杆的贵金属极细线拉线机，不锈钢微丝拉丝退火一体机，真正意义上的恒张力，恒线速，全自动的单头单控退火线绕线机，全自动主动放线装置以及带感应式连续退火的极细铜线拉线机等新产品，根本解决了普通设备生产出的成品线内外松紧不一，排线不整齐，抗拉强度和延伸率无法控制，成品率低等缺陷，使产品质量更上了一个档次，设备的外观，制造精度和技术性能可以与进口设备相媲美，完全能够满足客户国外订单的高品质要求。

The results indicated that the mineralization of the original SOC was accelerated by maize root exudations more significantly in low N application rate than in high N application rate, which was probably due to more N demands from soil organic matter in the case of low N application rate.

由此说明，在养分不足的条件下，玉米根分泌物可能更能激发土壤原有机质的矿化，从土壤中获得更多的养分。

Variable bit-rate allows a codec to change its bit-rate dynamically to adapt to the "difficulty" of the audio being encoded. In the example of Speex, sounds like vowels and high-energy transients require a higher bit-rate to achieve good quality, while fricatives e.g.

变比牲率允许编解码器动态调整比特率以适应的音频解码的&难度&，拿Speex来说，像元音和瞬间高音则需较高比特率来达到最佳效果，而摩擦音则用较少的比特即可完成编码。

The industrial test for Lanping lead-zinc oxidation mine was carried out in this paper.The results showed that too low recovery rate of zinc was not induced by the flotation process of oxidation zinc mine,and the key point of solving the problem lied in how to reduce the produce rate of gangues and how to increase the recovery rate of the metals in gangues.The economic benefit of this process was also evaluated,the result showed that the economic benefit was obvious when the ores of Jiaya Mountain were trea...

对兰坪铅锌矿氧化矿进行了500t/d的工业试验研究，结果表明，氧化锌回收率较低的原因并非氧化锌浮选工艺的问题，如何降低矿泥的产率和能否回收矿泥中的金属将是解决兰坪难选氧化铅锌矿的关键所在，同时也对该工艺进行了经济效益评估，采用现行工艺处理架崖山工业矿具有一定的经济效益，在进一步完善现有工艺的基础上，具有一定的应用前景。

On one hand, since reform and opening, though the quantity of female labor force is increasing constantly, the rate of labor force participation is lower than man, the overall level of the rate of unemployment is higher than man, during the working gold years of the age bracketed in 25-29 years old, 30-34 years old and 35-39 years old, there is the biggest gap between the female rate of unemployment and the male.

改革开放以来，计划经济体制向市场经济体制转变过程中，就业、失业和再就业的压力越来越大，成为困扰中国发展的一大社会经济问题。

However it can often be frust ating for a child when people are unable to pronounce their name.

但它往往可以令人沮丧的一个孩子当人们无法断言他们的名字。

All these compounds were obtained from this genus for the first time. Compound, 4-cumylphenol, was a new nature product.

所有化合物均为首次从本属海藻中分离得到，其中4cumylphenol为新天然产物。