... soldering-iron 烙铁式埋线器 sooty moulds 黑霉病 source of infection 传染源 ...
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Investigations revealed that sooty moulds caused various damage to tropical fruit crops on Hainan Island, 9.8 Per cent yield loss was resulted from extremely severe disease.
在海南等地的调查、测定结果表明，煤烟病对热带果树有一定为害性。 在特别重病的情况下，芒果产量损失9．8％；
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