scalar

简明释义

英[ˈskeɪlə(r)]美[ˈskeɪlər]

adj. 标量的；数量的；梯状的，分等级的

n. [数] 标量；[数] 数量

英英释义

单词用法

同义词

反义词

例句

1.In general, each value in the enumeration can be an arbitrary scalar SQL expression.

一般情况下，枚举中的每一个值都可以成为任意标量SQL表达式。

2.It is a scalar.

得到标量。

3.It is a scalar, it is a simple number.

一个标量，一个简单的数字。

4.Also, they are limited to scalar strings or undef for the values.

另外，它们的值被限制为标量字符串或undef。

5.Evaluating scalar values early enables optimization by doing things only once.

尽早对标量值求值可以通过只执行一次操作来实现优化。

6.Add, Delete, and Edit Entities; Scalar properties; Associations; and inheritance.

添加，删除，编辑实体；改变属性；联合(assocaiations)；继承(Inheritance)。

7.Figure 3 shows how a scalar rule is executed on sample data.

图3展示了如何在示例数据上执行标量规则。

8.If you stored a scalar value like a number or string, then that is what will come back.

如果您存储的是数字或字符串等标量值，那么将返回这些内容。

9.In mathematics, a scalar 标量 can be used to multiply a vector, changing its magnitude.

在数学中，标量 可以用来乘以一个向量，从而改变其大小。

10.When working with vectors, it is important to distinguish between scalar 标量 and vector quantities.

在处理向量时，区分 标量 和向量量是很重要的。

11.In physics, a scalar 标量 is a quantity that only has magnitude and no direction.

在物理学中，标量 是一种只有大小而没有方向的量。

12.Temperature is a scalar 标量 value that indicates how hot or cold something is.

温度是一个 标量 值，用来表示某物的冷热程度。

13.The speed of an object is a scalar 标量 quantity, while velocity is a vector.

物体的速度是一个 标量 量，而速度则是一个向量。

作文

In the realm of mathematics and physics, the concept of a scalar is fundamental yet often overlooked. A scalar is a quantity that is fully described by a magnitude alone, without any directional component. This distinguishes it from vectors, which have both magnitude and direction. For instance, when we say that the temperature in a room is 22 degrees Celsius, we are referring to a scalar quantity. It tells us how hot or cold the room is, but it does not indicate any direction. Similarly, if I mention that a car is moving at a speed of 60 kilometers per hour, this too is a scalar measurement. It conveys the rate of motion but lacks any information about the direction in which the car is traveling.Understanding scalar quantities is crucial in various fields of science and engineering. In physics, many fundamental concepts are expressed as scalar values. For example, mass is a scalar quantity; it tells us how much matter is present in an object, regardless of its position or movement. Energy, another important concept, is also represented as a scalar. When we discuss the energy stored in a battery or the energy consumed by a device, we focus solely on the amount of energy involved, not on any directional aspect.In contrast, vectors are used to describe quantities that involve both magnitude and direction. For example, velocity is a vector because it specifies how fast an object is moving and in which direction. The distinction between scalar and vector quantities is essential for solving problems in physics and engineering, as it determines the mathematical operations we can apply to these quantities. When adding two scalar values, we simply sum their magnitudes. However, when dealing with vectors, we must consider both their magnitudes and directions, often requiring more complex calculations.The importance of scalar quantities extends beyond theoretical applications. In everyday life, we encounter scalar measurements frequently. For example, when cooking, recipes often call for specific amounts of ingredients measured in grams or liters—both of which are scalar quantities. Understanding these measurements allows us to accurately follow recipes and create delicious meals.Moreover, in finance, scalar values are used to represent quantities such as money, interest rates, and profits. These scalar figures provide crucial information for making informed financial decisions. For instance, knowing that a company earned $1 million in profit last year is a scalar statement that influences investment strategies and business planning.In conclusion, the concept of a scalar is integral to our understanding of the world around us. Whether in the sciences, everyday activities, or financial matters, scalar quantities provide essential information that helps us make sense of various phenomena. By recognizing the significance of scalar measurements, we can enhance our problem-solving skills and improve our decision-making processes. Thus, appreciating the role of scalar quantities is vital for anyone engaged in analytical thinking or scientific inquiry.

在数学和物理的领域中，标量的概念是基础但常常被忽视的。标量是一个仅由大小完全描述的量，没有任何方向成分。这使得它与向量区分开来，后者具有大小和方向。例如，当我们说一个房间的温度是22摄氏度时，我们指的是一个标量量。它告诉我们房间的冷热程度，但并没有指示任何方向。同样，如果我提到一辆车以每小时60公里的速度行驶，这也是一个标量测量。它传达了运动的速率，但缺乏有关汽车行驶方向的信息。理解标量量在科学和工程的各个领域中至关重要。在物理学中，许多基本概念用标量值表示。例如，质量是一个标量量；它告诉我们一个物体中存在多少物质，而不考虑其位置或运动。能量，另一个重要的概念，也被表示为标量。当我们讨论电池中储存的能量或设备消耗的能量时，我们关注的仅是涉及的能量数量，而不是任何方向方面。相比之下，向量用于描述涉及大小和方向的量。例如，速度是一个向量，因为它指定了一个物体移动的速度和方向。标量和向量量之间的区别对于解决物理和工程问题至关重要，因为它决定了我们可以对这些量应用的数学运算。当添加两个标量值时，我们只是简单地相加它们的大小。然而，在处理向量时，我们必须同时考虑它们的大小和方向，通常需要更复杂的计算。标量量的重要性超越了理论应用。在日常生活中，我们经常遇到标量测量。例如，在烹饪时，食谱通常要求以克或升为单位测量特定数量的成分——这两者都是标量量。理解这些测量使我们能够准确地遵循食谱并制作美味的餐点。此外，在金融中，标量值用于表示如货币、利率和利润等数量。这些标量数字提供了做出明智财务决策的关键性信息。例如，知道一家公司的利润去年为100万美元是一个标量声明，它影响投资策略和商业规划。总之，标量的概念对我们理解周围世界至关重要。无论是在科学、日常活动还是金融事务中，标量量提供了帮助我们理解各种现象的基本信息。通过认识到标量测量的重要性，我们可以增强我们的解决问题的能力，并改善我们的决策过程。因此，欣赏标量量的作用对于参与分析思维或科学探究的任何人来说都是至关重要的。