import requests from bs4 import BeautifulSoup def fetch_nist_spectral_data(element, ionization_state): # 构建NIST光谱数据库的查询URL base_url = "https://physics.nist.gov/PhysRefData/ASD/lines_form.html" params = { "Type": "LineForm", "Element": element, "IonCharge": ionization_state, ...