selectivity

简明释义

英[səˌlekˈtɪvəti]美[səˌlekˈtɪvəti]

n. 选择性；分离性；选择度

英英释义

单词用法

同义词

反义词

例句

1.The Listing 7 output is starting to look useful, but suffers from a lack of selectivity.

清单7的输出看起来有用一些了，但是缺少选择性。

2.The selectivity is a value between 0 and 1 that indicates the percentage of rows within the table that the filter can pass.

选择率是介于 0 到1 之间的一个值，表示表中能通过过滤器的行所占的百分比。

3.Step 2.5: Verify the selectivity estimates

步骤 2.5：验证选择性估计

4.On its own, that's pretty powerful; but XPath offers quite a bit more in terms of selectivity, all using what's called a predicate.

这本身已经非常强大了，不过XPath 还提供了更多的选择性，即使用所谓的谓词。

5.In other words, the optimizer overestimated the selectivity of the local predicates on the table.

换句话说，优化器过高估计了本地谓词对表格的选择性。

6.However, in the absence of data distributions, the database server calculates selectivity for filters of different types based on table indexes.

但是，如果没有数据分布，则数据库服务器根据表索引计算不同类型的过滤器的选择率。

7.The selectivity of a predicate is defined as.

谓词的选择性定义如下。

8.And each node is annotated by statistics, estimated costs, selectivity information and so forth that are used to determine the access plan flow.

每个节点都有统计数据、评估成本、选择信息等用来确定访问计划流的注释。

9.The new filter offers improved selectivity for removing contaminants from water.

新过滤器提供了更好的选择性，可以去除水中的污染物。

10.In drug development, selectivity is crucial to ensure that a medication targets only the intended cells.

在药物开发中，选择性至关重要，以确保药物仅针对目标细胞。

11.The selectivity of the catalyst determines the efficiency of the chemical reaction.

催化剂的选择性决定了化学反应的效率。

12.High selectivity in the absorption spectrum is necessary for accurate measurements in spectroscopy.

在光谱学中，准确测量需要高选择性的吸收光谱。

13.The study focused on the selectivity of various receptors in the brain.

这项研究集中于大脑中各种受体的选择性。

作文

Selectivity is a crucial concept in various fields, including biology, psychology, and even education. It refers to the ability to choose or discriminate between different options based on specific criteria. In biology, for instance, selectivity can describe how certain enzymes only act on particular substrates, illustrating a refined mechanism that ensures efficiency and specificity in biochemical reactions. This biological form of selectivity (选择性) is vital for maintaining the delicate balance of processes within living organisms. In the realm of psychology, selectivity (选择性) plays a significant role in how individuals process information. Our brains are bombarded with countless stimuli every day, and our ability to focus on relevant information while ignoring distractions is a testament to our cognitive selectivity (选择性). This mental filtering helps us prioritize tasks and make decisions effectively, which is essential in our fast-paced world. Moreover, in education, selectivity (选择性) can be observed in the admissions processes of various institutions. Schools and universities often have specific criteria that they use to evaluate applicants, ensuring that they select candidates who best fit their academic environment and values. This form of selectivity (选择性) is not merely about choosing the most academically gifted students; it also encompasses diversity, potential, and personal qualities that contribute to a rich learning experience. However, selectivity (选择性) can also have its drawbacks. In the context of social relationships, being overly selective can lead to isolation. People may find themselves missing out on valuable connections because they are too focused on specific traits or characteristics they desire in friends or partners. This highlights the importance of balance; while selectivity (选择性) can help us make informed choices, it should not hinder our ability to embrace diversity and foster meaningful connections. In conclusion, selectivity (选择性) is an inherent part of human experience, influencing our choices in various aspects of life. Whether in biological systems, cognitive processes, or educational environments, the ability to discern and prioritize is essential for success. Yet, it is crucial to remain aware of the potential pitfalls of being too selective, particularly in interpersonal relationships. Striking a balance between selectivity (选择性) and openness can lead to richer experiences and deeper connections in our lives.

选择性是一个在生物学、心理学甚至教育等多个领域都至关重要的概念。它指的是根据特定标准选择或区分不同选项的能力。例如，在生物学中，选择性可以描述某些酶仅对特定底物起作用，说明了一种精细的机制，确保生化反应的效率和特异性。这种生物学形式的选择性(selectivity)对于维持生物体内过程的微妙平衡至关重要。 在心理学领域，选择性(selectivity)在个体如何处理信息方面发挥着重要作用。我们的脑海每天都被无数刺激轰炸，而我们能够专注于相关信息，同时忽略干扰，这证明了我们认知的选择性(selectivity)。这种心理过滤帮助我们优先处理任务并有效做出决策，这在我们快节奏的世界中至关重要。 此外，在教育中，选择性(selectivity)可以在各种机构的招生过程中观察到。学校和大学通常有特定的标准来评估申请者，确保他们选择最适合其学术环境和价值观的候选人。这种形式的选择性(selectivity)不仅仅是关于选择最有学术天赋的学生；它还包括多样性、潜力和个人品质，这些都是丰富学习体验的重要组成部分。 然而，选择性(selectivity)也可能有其缺点。在社会关系的背景下，过于选择性可能导致孤立。人们可能会发现自己错过了宝贵的联系，因为他们过于关注朋友或伴侣所渴望的特定特征或特性。这突显了平衡的重要性；虽然选择性(selectivity)可以帮助我们做出明智的选择，但它不应妨碍我们接受多样性和促进有意义的联系。 总之，选择性(selectivity)是人类经验中固有的一部分，影响着我们生活各个方面的选择。无论是在生物系统、认知过程还是教育环境中，辨别和优先考虑的能力对成功至关重要。然而，保持对过于选择性可能带来的潜在陷阱的警惕，尤其是在与人际关系方面，是至关重要的。在选择性(selectivity)和开放性之间找到平衡，可以使我们在生活中获得更丰富的体验和更深厚的联系。