By field observation and simulating test of shallow seam longwall mining, the phenomenon of main roof asymmetry breaking is discovered during the first weighting.

依据典型浅埋煤层工作面的实测和模拟，发现了采场老顶初次破断的非对称现象。

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This inference based on the records of the seasonal signal in atmospheric co 2, the surface air temperature and the satellite data have yet to be proved by field observation data of land vegetation.

这一根据大气二氧化碳浓度季节变化、陆地年平均气温和卫星遥感数据的推断，尚有待于利用对地面植被的实际观测资料予以检验。

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By then she had 15 months of field data from Gombe, most of it gathered through patient observation of individuals she knew by monikers such as David Greybeard, Mike, Olly, and Fifi.

当时她已经在冈贝考察了15个月，收集了大量的野外数据，这些数据大多是通过对某些黑猩猩个体的耐心观察而得到的，珍还给这些黑猩猩分别取名为灰胡子大卫、麦克、奥利和菲菲。

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