1.
Classification and Formative Effects of Sandstone Reservoirs with Low Recovery Efficiency;
难动用储层影响因素及分类标准研究
2.
The feasibility estimate of water-flooding to the low-permeability and difficlty producing reserves
低渗难动用油藏注水开发可行性评价
3.
Comprehensive Study and Evaluation to Behavioral Characteristics of Difficult-to-produce Reserves of Luodai Gas Field;
洛带气田难动用储量动态特征研究及评价
4.
Drilling Matching Technologies to Develop Difficult-to-producing Reserves,Western Sichuan Basin
适合川西难动用储量开发的钻井配套技术
5.
Use horizontal well to develop hard-to-recover reserves in Kexia heavy oil reservoir of Liudong area,Karamay oilfield
利用水平井开发克拉玛依油田六东区克下组稠油油藏难动用储量
6.
Difficult to move or use;unwieldy.
难搬动的，难用的难于活动或使用的；笨拙的
7.
(of tools,furniture,etc)difficult to use or move;not well designed
（指工具、家具等）难用的,难移动的;设计欠佳的
8.
Challenges in Mobile Application Development
移动应用程序开发中的难题
9.
Unmanageable.Used of animals, especially cows or horses.
难控制的。用于动物，尤其是奶牛或马
10.
Needless to say, it's difficult to do manual labor on an empty stomach.
不用说，空着肚子劳动是很难的。
11.
It' s too exciting for words.
真是太激动人心了，难以用语言来形容。
12.
Words can hardly describe how excited we were.
我们激动的心情难以用笔墨来形容。
13.
Application of Difficult Degree Increment on Innovation of Difficult Movement of Wushu Routine Exercise;
递进加难创新法在武术套路难度动作创新中的运用研究
14.
On the Practicality of Multimedia in the Innovation of More Difficult Act of the Competitive Wushu Routines
多媒体在武术难度动作创新中的实用性研究
15.
Research on the Application of Attribution Theory in the Hardness Act Teaching of Gymnastics;
归因理论在健美操难度动作教学中的应用研究
16.
The Reason of Trade Credit and the Measures to the Difficulties Encountered by Small and Medium Enterprises in Financing;
商业信用存在动机研究与中小企业融资难出路
17.
Application of transplanting method in innovation of Wushu routine difficult actions;
浅谈移植法在武术套路难度动作创新中的运用
18.
Dynamic behaviors of a predator model incoporating refuge and toxicity
具避难所和毒素作用的捕食系统动力学行为