In large scale field surveys, multistage sampling is applied because the situations are complex and there are many influencing factors.

大规模现场调查，由于情况复杂、影响因素多，往往采用多阶段混合型随机抽样方法。

youdao

In short, the Sun's large-scale magnetic field is taken to be self-sustaining, so that the solar-activity cycle it drives would be maintained with little overall change for perhaps billions of years.

简单来说，就是太阳的巨大磁场被用来进行自我维持，所以，由其驱动的太阳活动周期将会在几十亿年的时间里维持整体上维持极小的变动。

youdao

Building in the field of engineering, the phenomenon of large-scale, universal, long-standing impact is enormous.

建设领域工程款拖欠现象的大量、普遍、长期存在所造成的影响是巨大的。

youdao

The Culture for Development Indicator Suite (CDIS) provides a timely response to these challenges, building on the current favourable political context, greater capacity for data collection, and the critical mass of field experiences from large-scale projects.

UNESCO: Culture for Development Indicators

Lundin also believes that large-scale digitization of all tissue samples will also allow for the development of a whole new field of image-based analysis methods.

FORBES: The Socialization of Microscopes