variable controlled variable

简明释义

可控变量

英英释义

例句

1.The speed of a car during a crash test is a variable controlled variable, whereas the weight of the car is a 变量控制变量.

在碰撞测试中，汽车的速度是一个变量控制变量，而汽车的重量是一个变量控制变量。

2.When studying the effect of temperature on chemical reactions, the temperature is a variable controlled variable and the concentration of reactants is a 变量控制变量.

在研究温度对化学反应影响时，温度是一个变量控制变量，而反应物的浓度是一个变量控制变量。

3.In an experiment to test plant growth, the amount of sunlight is a variable controlled variable, while the type of plant is a 变量控制变量.

在一个测试植物生长的实验中，阳光的照射量是一个变量控制变量，而植物的种类是一个变量控制变量。

4.In a clinical trial, the dosage of medication is a variable controlled variable, while the patient's age is a 变量控制变量.

在一项临床试验中，药物剂量是一个变量控制变量，而患者的年龄是一个变量控制变量。

5.In an educational study, the teaching method is a variable controlled variable, while the students' prior knowledge is a 变量控制变量.

在一项教育研究中，教学方法是一个变量控制变量，而学生的先前知识是一个变量控制变量。

作文

In scientific research, understanding the relationship between different elements is crucial for drawing accurate conclusions. One of the key concepts in this field is the idea of a variable controlled variable, which refers to the factors that researchers manipulate or measure in an experiment. This concept plays a vital role in ensuring that experiments yield valid and reliable results.To illustrate this, consider a simple experiment designed to test the effect of sunlight on plant growth. In this scenario, the amount of sunlight received by the plants is the independent variable, meaning it is the factor that is changed or controlled by the researcher. The growth of the plants, measured in terms of height or number of leaves, is the dependent variable, which is what the researcher observes and measures in response to changes in the independent variable. However, there are also other factors that need to be kept constant to ensure that the results are due solely to the manipulation of sunlight. These factors are known as controlled variables.Controlled variables can include the type of plant used, the amount of water each plant receives, the type of soil, and even the temperature of the environment. By keeping these variables constant, the researcher can confidently attribute any differences in plant growth directly to the amount of sunlight the plants receive. If any of these controlled variables were allowed to change, it would introduce confounding variables that could skew the results and lead to inaccurate conclusions.Understanding the distinction between independent variables, dependent variables, and controlled variables is essential for anyone conducting experiments. It allows researchers to design their studies more effectively and ensures that they can replicate their findings. For example, if another researcher wanted to repeat the study on plant growth, they would need to control for the same variables to ensure that their results are comparable.Moreover, the importance of controlled variables extends beyond just plant growth experiments. In clinical trials, for instance, researchers must control for various factors such as age, gender, and pre-existing health conditions when testing the effectiveness of a new drug. By controlling these variables, they can better isolate the effects of the medication being tested.In conclusion, the concept of variable controlled variable is fundamental to the scientific method. It helps researchers maintain the integrity of their experiments and ensures that their findings are credible. Without proper control of variables, the validity of research outcomes can be compromised, leading to potential misinformation and misunderstanding. Therefore, mastering the concept of controlled variables is essential for anyone involved in scientific inquiry, whether in a laboratory setting or through field studies. By doing so, we contribute to the advancement of knowledge and the reliability of scientific discoveries.

在科学研究中，理解不同元素之间的关系对于得出准确的结论至关重要。这个领域的一个关键概念是变量控制变量的思想，它指的是研究人员在实验中操纵或测量的因素。这个概念在确保实验产生有效和可靠的结果方面发挥着重要作用。为了说明这一点，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，植物接受的阳光量是自变量，这意味着它是由研究人员改变或控制的因素。植物的生长，以高度或叶子数量来衡量，是因变量，这是研究人员观察和测量的内容，以响应自变量的变化。然而，还有其他因素需要保持不变，以确保结果仅由于阳光的操控而产生。这些因素被称为控制变量。控制变量可以包括使用的植物类型、每株植物获得的水量、土壤类型，甚至环境温度。通过保持这些变量不变，研究人员可以自信地将植物生长的任何差异直接归因于植物接受的阳光量。如果允许这些控制变量发生变化，就会引入混杂变量，这可能会扭曲结果并导致不准确的结论。理解自变量、因变量和控制变量之间的区别对任何进行实验的人来说都是必不可少的。它使研究人员能够更有效地设计他们的研究，并确保他们可以复制他们的发现。例如，如果另一位研究人员想要重复植物生长的研究，他们需要控制相同的变量，以确保他们的结果可以比较。此外，控制变量的重要性超越了植物生长实验。在临床试验中，例如，研究人员必须控制各种因素，如年龄、性别和既往健康状况，以测试新药的有效性。通过控制这些变量，他们可以更好地孤立所测试药物的效果。总之，变量控制变量的概念是科学方法的基础。它帮助研究人员维护实验的完整性，并确保他们的发现是可信的。如果没有适当控制变量，研究结果的有效性可能会受到损害，从而导致潜在的错误信息和误解。因此，掌握控制变量的概念对于任何参与科学探究的人来说都是必不可少的，无论是在实验室环境中还是通过实地研究。通过这样做，我们有助于知识的进步和科学发现的可靠性。