The mass coefficient was brought forward to assess the activity factor of original coal gangue.

引入质量系数法评定原状煤矸石经热活化后辅助胶凝性能的大小。

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Land is a basis for the existence of ecosystems, which is the most important economic activity factor of production.

土地是生态系统的基础，是经济活动必要的生产要素。

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Objective to study the curative effect of sika deer immunocyte activity factor (SIAF) on viral myocarditis in mouse model.

目的研究梅花鹿免疫细胞活性因子(S IAF)对病毒性心肌炎的治疗作用。

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In his speech, Bush acknowledged that climate change is real and that human activity is a factor.

NPR: Bush Calls for Goal on Reducing Greenhouse Gases

An emerging consensus now indicates a rising tide of entrepreneurial activity is a factor that links low tax burdens and improvements in welfare and wealth-creation for those at the bottom.

FORBES: Don't Let The Pundits Fool You, A Tax Hike On The Rich Is Paid For By The Poor

Two questions were key: Have mean global temperatures risen compared to pre-1800s levels, and has human activity been a significant factor in changing mean global temperatures?

CNN: Surveyed scientists agree global warming is real