速率

Results showed that the kinetics of photocatalytic degradation of ethylene by TiO2/ACF desoposited Pt in the simulated cold storage environment for horticultural products could be described using the pseudo first-order equation. The prepared TiO2/ACF-Pt, in the process of which Pt was initially deposited on the surface of ACF and then TiO2 was coated, would promote the activity of ethylene decomposing. When ion sputtering time was 60 seconds (Pt/Ti atomic concentration ratio was 0.112), the apparent rate constant of the reaction of TiO2/ACF-Pt was 1.16 times as much as that of TiO2/ACF. The micrographic structure of ACF was not damaged and an excessive porous structure, which was contributive to absorbing the diluted ethylene, was obtained by the way of ion sputtering Pt.

结果表明：在模拟园艺产品冷藏环境中，TiO2 /ACF-Pt光催化降解乙烯的动力学可用表观一级速率方程来描述；ACF表面先溅射沉积Pt，再进行TiO2附着方案，能提高降解乙烯的能力，当溅射时间为60 s（Pt/Ti原子浓度比为0.112）时，表观一级速率常数是未溅射Pt的1.16倍；TiO2/ACF-Pt的制备方法，对ACF形貌结构没有破坏，并能得到有利于对微量乙烯的吸附的多孔结构。

Rate Matching Algorithm is the key algorithm in Multirate scheme.

速率匹配算法是多速率方案的核心算法。

Data multirate design improves the ability of UWB-OFDM system to support various rate services.

多速率设计提高了UWB-OFDM系统支持不同数据速率业务的能力。

Joint control algorithms of multirate hierarchical CDMA systems are studied. We propose a new algorithm of power, rate and admission joint control.

本文对多速率分层结构CDMA系统的联合控制算法进行了研究，提出了一种新的功率、速率和接入联合控制算法。

The characters and performance of the biofilm were studied. When the concentration of nitrite is 206.82 mg/L, the velocity of nitrification is 260 mg/L·d. The best performed bacteria, N-20, were identified as Nitrobacter sp.

实验得到了稳定的自养硝化生物膜；当NO-2浓度为206.82mg/L时，生物膜的稳定硝化速率可达260mg/L·d；经鉴定，硝化速率最高的N20菌株属硝化杆菌属(Nitrobactersp。)。

In this paper, adopted augmenting culture in nitrite bacteria culture media and the method of silica gel plate isolation,31 strains of bacteria were isolated from vegetable garden soil of our school. The color reaction test was carried out with Griess reagent and culture fluid, which was regarded as the index to determine producing NO2- or not. 13 strains which color were deep were obtained and they were further rescreened by doing nitrite test. A strain N4(coded N4,the same to the following)with higher rate of nitrosification was picked up after rescreened; A strain B08( coded B08 ,the same to the following) with higher rate of denitrification was obtained after isolated and rejuvenated from our lab conserving mixed denitrifying bacteria culture.

本研究采用亚硝化细菌富集培养基选择培养和硅胶平板分离法，从本校农场菜园土中分离到31株细菌，以格利斯试剂对培养液的反应颜色深浅作为指标衡量其产NO_2~-的多少，经初筛从分离株中筛选出13株格利斯试剂反应颜色较深的菌株，再对这13株菌作亚硝化试验，最终选出一株亚硝化速率较高的菌株(编号为N_4，下同)；另外，通过对本实验室保存的反硝化细菌混合菌液进行分离复壮，筛选出一株反硝化速率高的菌株编号为B_

However, in different primate groups, as well as in different CCR5 gene regions, synonymous substitution rate Ks and nonsynonymous substitution rate Ka were obviously different.

通过使用不同的时间标尺，我们估计了Ka和Ks在不同灵长类类群中的进化速率，并与它们在啮齿类中的进化速率比较。

Systemic researching of these phenomena, finding the principle of them and decreasing the effections of the nonuniformly sampling with post data processing, will promote the development of the time-interleaved ADC system.

随着数字信号处理技术的发展，ADC的采样速率和精度成为各种电子系统的瓶颈，提高ADC的采样速率和精度成为学术界和仪器厂商的首要目标。

Methods Eighty healthy nulliparous parturients scheduled for patientcontrolled epidural analgesia in labour, were randomly divided into 4 groups(n=20) according to different infusion speed:group I with a speed of 4 ml/h, group II with 6 ml/h, group III with 8 ml/h, group IV with 10 ml/h.

对80 例行自然分娩的单胎足月初产妇，均采用硬膜外自控分娩镇痛，根据不同背景输注速率随机分为四组，A组输注速率为4 ml/h，B组为6 ml/h，C组为8 ml/h，D组为10 ml/h。

Photosynthetic traits of Ningai 1 and its 4B-monosomic, nullisomic line were investigated in this paper(Rht3 gene was located in 4B-chromosome). 4B-chromosome has the positive effects on photosynthetic rate, chlorophyll content, RuBP carboxy lase content and activity, leaf conductance, chlorophyll relatve steady phase and photosynthetic avtive duartion and these effects are accumlative. So 4B-chromosome has the promoting influence on photosynthesis.

本文系统地研究了带有Rht3基因的4B染色体二体(宁矮1号)、单体(宁矮1号M4B)、缺体(宁矮1号N4B)材料的光合特性，发现带有Rht3基因的4B染色体对光合速率、叶绿素含量、RuBP羧化酶含量及活性、叶片导度均有正效应，并有累加作用，而且对叶绿素含量缓降期和光合速率高值持续期也有正效应，因此带有Rht3基因的4B染色体具有促进光合作用的效应。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。