长时间选择性的培育创造了这些广泛的变种，但是这个过程还是要依赖大自然来产生出所需的基因。
Selective breeding over time created these wide variations, but the process depended on nature to produce the desired gene.
一般对这一问题的回答是：大多数的太阳光都是可见光，所以我们的眼睛在进化过程中已经形成了选择性偏好。
The traditional answer to this question was that most of the sun's radiation is visible light, so our eyes evolved to see those wavelengths.
主动转运这种转运过程的特征是选择性和饱和性，需要细胞的能量消耗。
Active transport: This process is characterized by selectivity and saturability and requires energy expenditure by the cell.
在方法研发和方法验证过程中应评估方法选择性并在方法应用于真实样品分析过程中持续保证。
Method selectivity should be evaluated during method development and throughout method validation and can continue throughout application of the method to actual study samples.
ATIR经由过程选择性连结能阻止传染的免疫细胞，并覆灭抨击袭击病人机体的免疫细胞而阐严重染。
ATIR works by selectively eliminating the immune cells that otherwise attack the patient's body, while sparing the immune cells that can fight infections.
在催化裂化反应条件下，研究了异丙苯主要裂化反应路径以及反应过程中反应温度和分子筛类型对苯产率和选择性的影响规律。
The dominant reaction pathways and the effect of reaction temperature and type of zeolites on the yield and selectivity of benzene formed during catalytic cracking of cumene were investigated.
型产品提供开放式工作区域的手工冷却和过程冷却以及选择性的局部减温。
Type m units provide man cooling and process cooling for both open work areas and selective spot cooling.
它们不但抑制均相、非均相结焦过程，而且会影响裂解产物分布和提高乙烯选择性。
The coking inhibitors not only inhibit the homogeneous and heterogeneous coke deposition processes but also influence pyrolysis product distribution and ethylene selectivity as well.
催化裂化C4 +馏分中的丁二烯选择性加氢和该馏分蒸馏分离同时进行以生产丁烯的一种过程。
A process in which the selective hydrogenation of butadiene in FCC C4 + fraction and the distillation separation of the fraction take place concurrently to produce butylene.
磨矿过程中添加碳酸钠，可实现矿泥的选择性脱除。
The addition of sodium carbonate into the grinding process can realize the selective desliming.
因此，对需要高选择性的光催化反应来说，使用同样材料，仅仅改变颗粒大小就可以获得完全不同的反应过程。
Thus markedly different reaction processes can be accomplished using the same material by varying the particle size as needed for highly selective photocatalysis.
研究了选择性氧化过程动力学及氧分压对氧化过程的影响。
Study on selective-oxidation kinetics and effect of oxygen partial pressure on oxidation process was conducted.
将膜分离过程的成本定义为成本渗透率和有效选择性的函数。
The cost parameters for membrane separation of gases are defined in terms of effective selectivity and cost permeability.
对胆甾醇配合及其提纯过程，将配合试剂从原来的钙盐C改为钙盐d，大大提高了配合的选择性和胆甾醇收率。
For the purification process for complexing of cholesterol, change of complexing reagent from Ca-C to Ca-D improved complexing selectivity and cholesterol yield.
语言模因在模仿、复制和传播的过程中具有模仿的选择性、复制的周期性和传播的变异性特点。
During the process of imitation, copy and spreading, linguistic memes embody the following characteristics: the selectivity of imitation, the periodicity of copy and the variability of spreading.
一种成功的工业催化剂，除具有足够的活性、选择性和耐热性外，还必须具有足够的机械强度，以便抵抗在使用过程中的各种应力。
A successful technical catalyst is required not only to have high activity, selectivity and heat-resistance, but also enough high mechanical strength in order to resist some mechanical stresses.
重点介绍液化气吸收塔双界面选择性控制方案设计与实施过程。
The design and implement of the bi interface selective control plan in LPG absorber is introduced.
此类型矿床是富铀地层选择性熔融，并在此过程中导致铀的活化、转移和局部富集的结果。
The formation of uranium mineralization is considered as a result remobilization, migration and local concentration caused by preferential melting of the uranium-rich strata.
本课题研究了铜镍合金纯氧选择性浸出过程中的热力学的影响因素。
The technology of copper-nickel alloy oxygen selective leaching has been used in industrial production in JinChuan Company.
催化剂有高的选择性。整个过程有好的生产环境。
The catalyst has high selectivity and the whole process is environmentally acceptable.
利用超细粒子并选用适当的助剂提高了F-T过程的反应活性，选择性和热稳定性。
The activity, olefin selectivity and thermal stability of F -T catalyst can be improved by using ultrafine particle with a suitable promoter.
借助于金相分析、SEM和EDX等方法，研究炼铜炉渣加炭粉、通惰性气体搅拌选择性还原贫化过程。
The selective reduction impoverishment of slag from copper smelting with addition of charcoal powder and stirring of inert gas is investigated by the aid of metallurgical analysis, SEM and EDX.
探讨了铬酸及其行生物的氧化过程，并从结构上解释了铬酸衍生物的选择性氧化作用。
In this paper, oxidative procedure of chromic acid and chromic acid derivatives is described. The selective oxidation of chromic acid derivatives is explained by their structure.
在实验室重点研究了工艺条件对选择性加氢脱双烯过程的影响。
The effect of process conditions on selective hydrogenation of diolefins was investigated in the laboratory.
在溶剂精制过程中不被选择性溶剂溶解和脱除的那部分油。
In solvent refining practice, that portion of the oil which remains undissolved and is not removed by the selective solvent.
按作者的结果提示这接合是对氧化的选择性的代谢过程。
According to the authors the results suggested that conjugation is an alternative metabolic process to oxidation.
对二价和高价离子具有高的选择性；(4)可取代传统处理过程中的多个步骤，因而比较经济。
Economic for it can replace many procedures in traditional process and separation technology, (4) Having high selectivity to different irons.
在萃取过程中加入光学纯酒石酸柱撑水滑石粉末，能明显提高对映体的选择性，对映体选择性分离因子最大值可达1.2。
The enantioseletivity can be improved obviously when the optical pure tartaric acid-LDHs powder was added during the process of extraction, the maximal enantioselective separation factor is 1.2.
在萃取过程中加入光学纯酒石酸柱撑水滑石粉末，能明显提高对映体的选择性，对映体选择性分离因子最大值可达1.2。
The enantioseletivity can be improved obviously when the optical pure tartaric acid-LDHs powder was added during the process of extraction, the maximal enantioselective separation factor is 1.2.
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