observation in field

基本解释

MethodsThe combination of geologic observation in field and indoor testing.
方法野外地质观察和室内测试相结合。
Combination with observation in field and experiments indoors, the biological characteristics of Massicus raddei was studied.
结合野外观察和室内试验，对栗山天牛的生物学特性进行了观察研究。
The systemic observation in the field for many years showed that temperature was the main factor affecting the dynamics of citrus canker in the stage of spring sprouting.
多年田间系统观察表明，柑橘溃疡病的消长，在春梢期，主要影响因子为气温。

UNESCO-IOC is pledging to coordinate a global and regional assessment of capacity development needs in the field of marine scientific research and ocean observation in developing nations and SIDS, leading to the formulation and implementation of a global capacity development strategy to fill identified gaps.
UNESCO: World Water Assessment Programme (WWAP)
Their method was based on the observation that electrical currents will be induced in a conductor (such as water) when it is faced with a magnetic field that varies over time.
ECONOMIST: Blue moon