不充分

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分的线索进行推理。

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分。

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.

多孔陶瓷膜在毛凝传质机理的作用能够有效地分离吸体。而毛凝膜分离传质机理的研究还很不充分,目前,文献报道仅局限于纯组分体的传质模型研究。