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Nowadays, farmers mainly adopt watermelon grafting technology to avoid wilt with the survival rate of grafted seedlings affected by temperature, humidity and light of the environment. Assurance of optimal environmental conditions has a direct influence on watermelon seedlings growth performance. At present, farmers usually observe the environmental(More)
AbstractConsidering the hidden danger in the finished stopes in underground metal mines in China, a new cavity data acquisition method based on 3D laser scanning technology is proposed in Dahongshan mine district. This technology uses contactless measurement mode, by which not only the geometric parameter of cavity such as length, area, volume, deformation(More)
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