controlled variable

简明释义

可控变量

英英释义

例句

1.Researchers often use a controlled variable 控制变量 like humidity when studying the effects of different air pollutants.

研究人员在研究不同空气污染物的影响时，通常会使用像湿度这样的控制变量 controlled variable。

2.In a scientific experiment, the temperature is a crucial controlled variable 控制变量 that must remain constant to ensure accurate results.

在科学实验中，温度是一个至关重要的控制变量 controlled variable，必须保持恒定以确保结果准确。

3.When testing the effects of fertilizer on plant growth, the amount of sunlight is another controlled variable 控制变量 that should be kept the same for all samples.

在测试肥料对植物生长的影响时，阳光的照射量是另一个需要保持一致的控制变量 controlled variable。

4.In an educational study, the teaching methods can be a controlled variable 控制变量 to evaluate the effectiveness of a new curriculum.

在教育研究中，教学方法可以作为一个控制变量 controlled variable，以评估新课程的有效性。

5.In a clinical trial, patient age can be a controlled variable 控制变量 to ensure that the results are not affected by age differences.

在临床试验中，患者年龄可以作为一个控制变量 controlled variable，以确保结果不受年龄差异的影响。

作文

In the field of scientific research, understanding the concept of a controlled variable is crucial for conducting effective experiments. A controlled variable is a factor that remains constant throughout the experiment to ensure that the results are valid and reliable. By controlling certain variables, researchers can isolate the effects of the independent variable on the dependent variable, allowing them to draw meaningful conclusions from their data.For instance, consider a simple experiment designed to test the effect of sunlight on plant growth. In this scenario, the independent variable is the amount of sunlight the plants receive, while the dependent variable is the growth of the plants measured in height or biomass. To ensure that the experiment is fair and the results are accurate, several controlled variables must be maintained. These might include the type of plant used, the soil quality, the amount of water given to each plant, and the temperature of the environment.By keeping these controlled variables constant, researchers can confidently attribute any differences in plant growth specifically to the varying amounts of sunlight. If any of these factors were allowed to change, it would introduce confounding variables that could skew the results and make it difficult to determine the true impact of sunlight on growth.The importance of controlled variables extends beyond the realm of botany to various scientific disciplines, including psychology, chemistry, and physics. For example, in a psychological study examining the effects of sleep deprivation on cognitive performance, researchers must control for variables such as participants' age, baseline cognitive ability, and environmental distractions. By ensuring these controlled variables remain constant, the study can more accurately assess the specific impact of sleep deprivation on cognitive function.Moreover, understanding controlled variables is not only essential for researchers but also for students learning the scientific method. When students conduct their own experiments, they must learn to identify which variables need to be controlled to produce valid results. This skill fosters critical thinking and analytical abilities, which are valuable in both academic and real-world situations.In conclusion, a controlled variable plays a pivotal role in the integrity of scientific research. By maintaining constant factors throughout an experiment, researchers can isolate the effects of the independent variable and obtain reliable results. This practice is fundamental to the scientific method and serves as a foundation for students and professionals alike in their pursuit of knowledge. Understanding and implementing controlled variables is key to advancing scientific inquiry and contributing to our understanding of the world around us.

在科学研究领域，理解“controlled variable”这一概念对于有效进行实验至关重要。“controlled variable”是指在整个实验过程中保持不变的因素，以确保结果的有效性和可靠性。通过控制某些变量，研究人员可以将自变量对因变量的影响隔离开，从而使他们能够从数据中得出有意义的结论。例如，考虑一个简单的实验，旨在测试阳光对植物生长的影响。在这个场景中，自变量是植物接受的阳光量，而因变量是植物的生长，通常用高度或生物量来衡量。为了确保实验公平且结果准确，必须保持几个controlled variables不变。这可能包括所用植物的类型、土壤质量、每株植物的水量以及环境温度。通过保持这些controlled variables不变，研究人员可以自信地将植物生长的任何差异归因于阳光的不同照射量。如果允许这些因素发生变化，就会引入混杂变量，这可能会扭曲结果，使其难以确定阳光对生长的真实影响。controlled variables的重要性不仅限于植物学，还扩展到心理学、化学和物理等各种科学学科。例如，在一项心理学研究中，研究人员需要控制诸如参与者的年龄、基线认知能力和环境干扰等变量，以考察睡眠剥夺对认知表现的影响。通过确保这些controlled variables保持不变，研究可以更准确地评估睡眠剥夺对认知功能的具体影响。此外，理解controlled variables不仅对研究人员至关重要，也对学习科学方法的学生至关重要。当学生进行自己的实验时，他们必须学会识别哪些变量需要控制，以产生有效的结果。这种技能培养了批判性思维和分析能力，这在学术和现实世界中都是有价值的。总之，“controlled variable”在科学研究的完整性中发挥着关键作用。通过在实验过程中保持恒定的因素，研究人员可以隔离自变量的影响并获得可靠的结果。这一实践是科学方法的基础，并为学生和专业人士在追求知识的过程中提供了基础。理解和实施controlled variables是推动科学探究和丰富我们对周围世界理解的关键。