I feel sad for this photograph, so is my village, combinedgrade and both in the same classroom, sometimes every other year enrollment, students is numerically small.
看到这些，有点心酸，我们村情况也差不多，合并年级在一教室上课，有时还是隔年招生，生源严重不够。
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Meanwhile, only limited number of research papers [7-10] try to examine combined work of heat consumption in buildings control systems and heat pumps (low grade heat sources).
The electronic information systems capability appraise, based on AHP synthesis evaluation and fuzzy theory, combined with expert grade method and fuzzy synthesis evaluation.