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计算机力学仿真的难点主要在以下几个方面: 建立准确的几何模型:力学仿真模型需要建立准确的几何模型,这包括材质、网格、约束等因素。建立准确的几何模型需要有扎实的数学和物理基础,以及丰富的实际经验。 处理复杂的物理问题:力学仿真中经常会遇到各种复杂的物理问题,如摩擦、变形、应力应变、流体力学等。解决这些 阅读全文
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python三角网格划分示例 import numpy as np import turtle # 输入三角形的边长 length = float(input("Enter the length of the triangle: ")) # 计算最短边、最长边和三角形个数 short_side = 阅读全文
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PIL resize from PIL import Image # Open the image img = Image.open("20230222100736979.jpg") # Resize the image img = img.resize((img.width*2, img.heig 阅读全文
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python opencv Sharpened import cv2 import numpy as np # Load the image img = cv2.imread('20230222100736979.jpg') # Define the sharpening kernel kernel 阅读全文
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阿里云ECS linux操作系统 tomcat域名配置SSL 启用域名https 1、解压已保存到本地的Tomcat证书文件。 解压后您将看到文件夹中有以下文件: 证书文件(domain_name.pfx) 密码文件(pfx-password.txt) 说明 本文中证书名称以domain_name为 阅读全文
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微信小程序九宫格布局css .grid-list{ display: flex; flex-wrap: wrap; border-left: 1rpx solid #efefef; border-top: 1rpx solid #efefef; } .grid-item{ width:33.33%; 阅读全文
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小程序 swiper swiper-item <swiper class="banner_swiper" indicator-dots="true" indicator-color="white" indicator-active-color="gray" autoplay="true" inter 阅读全文
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IfcActorResource是一个IFC(Industry Foundation Classes)定义的术语,用于描述在工业领域中使用的资源。它是IFC标准的一部分,用于定义资源之间的关系和约束。 IfcActorResource可以是一个物理对象(如一个设备、机器或工具),也可以是一个逻辑对象 阅读全文
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python 调用java import subprocess # Replace "path/to/java/program" with the actual path to your Java program java_program_path = "path/to/java/program" 阅读全文
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import cv2 import numpy as np from matplotlib import pyplot as plt img = cv2.imread('20230222100736979.jpg', 0) hist = cv2.calcHist([img], [0], None, 阅读全文
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python opencv 分割像素通道 import cv2 import numpy as np # Load the image img = cv2.imread('path/to/image.jpg') # Split the image into its channels b, g, r 阅读全文
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python 操作csv 写csv import csv with open('path/to/file.csv', 'w', newline='') as csvfile: writer = csv.writer(csvfile, delimiter=',', quotechar='"', quo 阅读全文
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python操作excel pip install openpyxl 写: import openpyxl # Load the workbook workbook = openpyxl.load_workbook('path/to/file.xlsx') # Select the workshee 阅读全文
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java jsoup解析html ol li import org.jsoup.Jsoup; import org.jsoup.nodes.Document; import org.jsoup.nodes.Element; import org.jsoup.select.Elements; publ 阅读全文
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python opencv putText import cv2 # Load image img = cv2.imread("image.jpg") # Define text to draw text = "Hello, World!" # Define position to draw tex 阅读全文
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python播放视频 pip install pygame import pygame pygame.init() # Set the dimensions of the window screen = pygame.display.set_mode((640, 480)) # Load the v 阅读全文
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python time测试 import time def timer(seconds): start_time = time.time() while True: elapsed_time = time.time() - start_time if elapsed_time >= seconds: 阅读全文
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python opencv inRange import cv2 import numpy as np # Load the image img = cv2.imread('20220320151016_144_c.jpg') hsv = cv2.cvtColor(img,cv2.COLOR_BGR 阅读全文
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python opencv line import cv2 # Load an image img = cv2.imread("image1.jpg") # Draw a red line from (0, 0) to (100, 100) with a thickness of 5 pixels 阅读全文
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python datetime日期格式化 from datetime import datetime currentDateTime = datetime.now() print(currentDateTime.strftime("%Y-%m-%d %H:%M:%S")) ############# 阅读全文
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QHBoxLayout清空子控件 layout = QHBoxLayout() widget1 = QLabel("Widget 1") widget2 = QLabel("Widget 2") widget3 = QLabel("Widget 3") layout.addWidget(widget 阅读全文
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python判断是否是零时 from datetime import datetime now = datetime.now() if now.hour == 0 and now.minute == 0 and now.second == 0: print("It's midnight!") ### 阅读全文
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QLabel 显示opencv Mat import cv2 from PyQt5.QtGui import QImage, QPixmap from PyQt5.QtWidgets import QLabel label = QLabel() # Load the image using Open 阅读全文
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QDateTime计算时间差 from PyQt5.QtCore import QDateTime # Create two QDateTime objects dt1 = QDateTime.currentDateTime() dt2 = QDateTime(2022, 1, 1, 0, 0) # 阅读全文
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python pygame播放音频文件 pip install pygame import pygame # Initialize pygame pygame.init() # Load the MP3 file pygame.mixer.music.load("1.mp3") # Play the 阅读全文
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pyqt播放音频 from PyQt5.QtCore import QUrl from PyQt5.QtMultimedia import QMediaPlayer from PyQt5.QtWidgets import QApplication import sys app = QApplicat 阅读全文
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python opencv line import cv2 # Load the image img = cv2.imread('path/to/image.jpg') # Draw a red line from (0, 0) to (100, 100) with a thickness of 5 阅读全文
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pyqt时间格式化 from PyQt5.QtCore import QDateTime currentDateTime = QDateTime.currentDateTime() print(currentDateTime.toString("yyyy-MM-dd hh:mm:ss")) #### 阅读全文
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python opencv canny import cv2 # Load the image img = cv2.imread('path/to/image.jpg') # Convert the image to grayscale gray = cv2.cvtColor(img, cv2.CO 阅读全文
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OpenCV提供了多种方法来提取图像中的区域。其中,最常用的方法是使用cv2.rectangle函数绘制矩形框,然后使用切片操作提取矩形框内的像素。 import cv2 # 读取图片 img = cv2.imread('path/to/image') # 绘制矩形框 x, y, w, h = 10 阅读全文