projectiles

简明释义

英[prəˈdʒɛktaɪlz]美[prəˈdʒɛktaɪlz]

n. 落弹数（projectile 的复数形式）

英英释义

单词用法

同义词

反义词

例句

1.Massive projectiles striking much larger bodies create various kinds of craters, including multi-ring basins—the largest geologic features observed on planets and moons.

巨大的抛射物撞击更大的天体，创造了各种各样的陨石坑，包括多环盆地——这是在行星和卫星上观察到的最大的地质特征。

2.The effects of frication, air frication on the speed and trajectory of projectiles have been fully considered.

主要考虑了摩擦力、空气阻力等因素对弹丸的速度和轨迹的影响。

3.Massive projectiles striking much larger bodies create various kinds of craters, including "multi-ring basins"—the largest geologic features observed on planets and moons.

大量的抛射物撞击更大的天体，形成各种各样的陨石坑，包括“多环盆地”——在行星和卫星上观察到的最大的地质特征。

4.This the velocity of the projectiles are measured by the fiber sensor.

本模型采用光纤传感器探测抛体出口速度。

5.Fixed projectiles so they can be shot in directions, not just at targets.

修复投掷物，所以它们会击中方向，不只是击中目标。

6.Your parents know how to launch nasal projectiles.

你的父母懂得如何用力擤鼻涕。

7.Even the tiniest pieces move through orbit at speeds fast enough to turn them into potentially deadly projectiles.

即使是最微小的物体，如果以足够快的速度在轨道上移动，也能成为潜在的致命抛射物。

8.Projectiles no longer hurt the player when reflected.

投掷物反射时不再伤害玩家。

9.The cannon fired multiple projectiles 炮弹 in quick succession.

大炮快速连续发射了多个projectiles炮弹。

10.The archery competition featured highly accurate projectiles 箭矢 that hit the target every time.

这场射箭比赛使用了每次都能准确击中目标的projectiles箭矢。

11.In physics class, we learned how projectiles 抛射物 move under the influence of gravity.

在物理课上，我们学习了如何在重力影响下运动的projectiles抛射物。

12.The military tested various types of projectiles 弹丸 during the exercises.

军方在演习中测试了多种类型的projectiles弹丸。

13.Engineers designed new projectiles 投射物 for improved range and accuracy.

工程师设计了新的projectiles投射物，以提高射程和准确性。

作文

In the world of physics and engineering, the term projectiles refers to objects that are thrown into the air with an initial velocity and are subject to the forces of gravity and air resistance. Understanding the motion of projectiles is crucial in various fields, including sports, military applications, and even space exploration. This essay will explore the principles behind projectiles, their types, and their significance in real-world scenarios.The study of projectiles can be traced back to ancient times when humans first began to use bows, slings, and catapults for hunting and warfare. These early devices utilized the concepts of force and motion to launch objects at high speeds. The basic principle governing the motion of projectiles is known as projectile motion, which describes the path that an object follows when it is thrown or propelled into the air.Projectile motion can be analyzed by breaking it down into two components: horizontal and vertical motion. The horizontal motion is uniform, meaning that the object moves at a constant speed, while the vertical motion is influenced by gravity, causing the object to accelerate downwards. This combination results in a parabolic trajectory, which is characteristic of most projectiles. For instance, when a basketball is shot towards the hoop, its path resembles a parabola as it rises and then falls back towards the ground.There are various types of projectiles, including but not limited to, bullets, missiles, and even water balloons. Each type has its unique characteristics and applications. In the military context, understanding the dynamics of projectiles is essential for accurate targeting and effective weaponry. Engineers must consider factors such as drag, lift, and wind resistance when designing projectiles to ensure they achieve their intended range and accuracy.In sports, athletes often rely on the principles of projectiles to enhance their performance. For example, a javelin thrower must understand the optimal angle and speed at which to release the javelin to maximize distance. Similarly, a golfer must consider the trajectory of the golf ball after striking it to achieve the desired outcome on the course. Coaches often incorporate the physics of projectiles into training regimens to help athletes improve their skills.Furthermore, the concept of projectiles extends beyond Earth’s atmosphere. In space exploration, understanding how rockets and other spacecraft behave as they travel through different gravitational fields is fundamental. The launch of a satellite involves calculating the precise angles and velocities needed to place the satellite into orbit, which relies heavily on the principles of projectiles.In conclusion, the study of projectiles encompasses a wide range of applications and is vital for advancements in science and technology. From ancient warfare to modern sports and space exploration, the principles governing the motion of projectiles continue to play a significant role in our understanding of the physical world. As we further explore this fascinating topic, we can appreciate the intricate balance of forces that govern the flight of projectiles and their impact on our daily lives.

在物理和工程领域，术语projectiles指的是以初始速度被投掷到空中的物体，并受到重力和空气阻力的作用。理解projectiles的运动对于体育、军事应用甚至太空探索等多个领域至关重要。本文将探讨projectiles背后的原理、类型以及它们在现实世界场景中的重要性。对projectiles的研究可以追溯到古代，当时人类首次开始使用弓、弹弓和投石机进行狩猎和战争。这些早期设备利用了力和运动的概念，以高速度发射物体。支配projectiles运动的基本原理被称为抛体运动，它描述了一个物体在被抛出或推进到空中时所遵循的路径。抛体运动可以通过将其分解为两个分量来进行分析：水平运动和垂直运动。水平运动是均匀的，这意味着物体以恒定速度移动，而垂直运动则受重力的影响，导致物体向下加速。这种组合产生了抛物线轨迹，这是大多数projectiles的特征。例如，当一个篮球朝着篮筐投篮时，它的路径类似于抛物线，因为它上升然后再次落回地面。projectiles有多种类型，包括但不限于子弹、导弹甚至水气球。每种类型都有其独特的特性和应用。在军事背景下，理解projectiles的动力学对于准确瞄准和有效武器至关重要。工程师在设计projectiles时必须考虑诸如阻力、升力和风阻等因素，以确保它们达到预期的射程和准确性。在体育中，运动员通常依赖于projectiles的原理来提高他们的表现。例如，标枪投掷者必须了解释放标枪的最佳角度和速度，以最大化距离。同样，高尔夫球手必须考虑击打高尔夫球后的轨迹，以在球场上实现预期的结果。教练们常常将projectiles的物理学融入训练计划，以帮助运动员提高技能。此外，projectiles的概念超越了地球的气氛。在太空探索中，理解火箭和其他航天器在不同引力场中的行为是基础。卫星的发射涉及计算将卫星放入轨道所需的精确角度和速度，这在很大程度上依赖于projectiles的原理。总之，对projectiles的研究涵盖了广泛的应用，对于科学和技术的进步至关重要。从古代战争到现代体育和太空探索，支配projectiles运动的原理继续在我们对物理世界的理解中发挥重要作用。当我们进一步探索这一迷人的主题时，我们可以欣赏支配projectiles飞行的力量之间的微妙平衡及其对我们日常生活的影响。