我对 Latex 还不熟悉，正在用它写第一份报告。我的问题是引用并不总是有效。有些引用可以正常工作，而其他引用则在我的报告中显示为 [?]。
我在 overleaf 中收到的消息是 {Package natbib 警告：第 3 页上的引用“HOBOm”在输入行 6 上未定义。，您引用了参考书目中未包含的内容。请确保引用 (\cite{...}) 在您的参考书目中有相应的键，并且两者的拼写相同。}
尽管我的参考书目文件确实包含此来源。这是我的 ref.bib 文件中包含的来源。我还确保标签是正确的
我的 .bib 文件代码
@book{Hakim,
author = {Gregory Hakim and Jerome Patoux},
title = {Weather a concise introduction},
year = {2021},
publisher = {Cambridge University Press},
address = {United Kingdom},
}
@proceedings{HOBOm,
author = {Onset},
title = {HOBO Data Logging Rain Gauge (RG3 and RG3-M) Manual},
year = {2012},
url = {https://www.onsetcomp.com/sites/default/files/resources-documents/10241-M%20MAN-RG3%20and%20RG3-M.pdf},
}
@article{virga,
title="Is virga rain that evaporates before reaching the ground?",
author="Fraser, Alistair B and Bohren, Craig F",
journal="Monthly weather review",
volume="120",
number="8",
pages="1565--1571",
year="1992",
URL={https://journals.ametsoc.org/view/journals/mwre/120/8/1520-0493_1992_120_1565_ivrteb_2_0_co_2.xml},
}
@book{modern,
author = {Devore, Jay L and Berk, Kenneth N and Carlton, Matthew A and others},
title = {Modern mathematical statistics with applications},
year = {2012},
publisher = {Springer},
address = {USA},
}
@book{foken,
author = "Thomas Foken",
title = "Springer Handbook of Atmospheric Measurements",
year = "2021",
publisher = "Springer Nature",
address = "Switzerland",
}
@article{x,
title={Temporal precipitation variability versus altitude on a tropical high mountain: Observations and mesoscale atmospheric modelling},
author={M{\"o}lg, Thomas and Chiang, John CH and Gohm, Alexander and Cullen, Nicolas J},
journal={Quarterly Journal of the Royal Meteorological Society: A journal of the atmospheric sciences, applied meteorology and physical oceanography},
volume={135},
number={643},
pages={1439--1455},
year={2009},
publisher={Wiley Online Library},
}
@misc{stamey2008modern,
title={Modern mathematical Statistics with applications},
author={Stamey, James},
year={2008},
publisher={Taylor \& Francis},
}
@article{uncertainity,
title={Evaluation of measurement uncertainty for thermometers with calibration equations},
author={Chen, Chiachung},
journal={Accreditation and quality assurance},
volume={11},
pages={75--82},
year={2006},
publisher={Springer},
}
@manual{Tiny_guide,
title = "Rugged, waterproof data logger with temperature and relative humidity probe",
key="Gemnini Data Loggers",
url= "https://assets.geminidataloggers.com/pdfs/original/3753-tgp-4505.pdf",
year= "2019"
}