The prevalent internal cause was existence of the local bacterial source and loss of the resistant ability of wheat varieties, while the decisive factor was the abundant rainfall in spring.
当地菌源的存在和小麦品种的抗性丧失是发生大流行的内因，春季降水量多是大流行的决定性因素。
Many factors affect concrete corrosion, but the corrosion evaluation of multi-factor is not prevalent.
影响混凝土腐蚀的因素很多，但多因素的腐蚀性评价并不多见。
Many factors affect concrete corrosion, but the corrosion evaluation of multi-factor is not prevalent.
影响混凝土腐蚀的因素很多，但多因素的腐蚀性评价并不多见。
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