在诊断为乳腺癌的病人中，癌细胞侵袭与扩散至身体的其他部位（即转移）是导致病人死亡的主要原因。
The invasion and spread of cancer cells to other parts of the body, known as metastasis, is a principal cause of death in patients diagnosed with breast cancer.
铁在含有一定浓度重铬酸根的硫酸中，自腐蚀状态下的阴极反应速率受重铬酸根阴极还原电子转移过程与扩散过程共同控制。
Cathodic reaction rate at open circuit Potential for iron in sulfuric acid containing dichromate ion was controlled by both electron transfer process and diffusion process.
痢疾杆菌耐药性质粒的转移与扩散的研究。
Study on transfering and diffusing of antibiotic resistant plasmid in Shigella spp.
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