（4）科学技术因素（technology & science）： ①加盟品牌有自身的管理体系，科学又简单。 ②在经营管理上，有总部带领，有困难及时解决，更便于管路经营。
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但科学技术的更迭，并导致对中等技工的需求降低，已被多数经济学家认可为驱动因素。
But the driving factor, most economists agree, has been technological change and the consequent lowering of demand for middle-skilled workers.
今年“平等获得教育、培训和科学技术：女性的合宜工作之路”这一主题重点关注妇女健康的一些基本决定因素。
The theme this year, "Equal access to education, training and science and technology: Pathway to decent work for women", focuses on some basic determinants of women's health.
科学技术作为商品，仍然具有价值和使用价值二因素。
As a commodity, scientific technology still has value and use value two factors.
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