He has to deduce what he can from the few scanty cluse available.

他必须根据现有的几条不充的线索进行推理。

The coverage of the subject in his botany text is inadequate.

他的植物学教科书中对那题目的叙述不充。

Adsorbable gases can be separated by porous ceramic membranes under the capillary condensation mechanism of membrane separation, on which prior study was only limited to pure components.

多孔陶瓷膜在毛细管冷凝理的作用能够有效吸附性气体。而毛细管冷凝膜理的研究还很不充,目前,文献报道仅局限于纯组气体的模型研究。