查询词典 difficulties

There are many difficulties when weuse good traits of wild rice to hybridize.

随着全球人口的快速增长，对粮食，特别是水稻的需求也在快速增长[1]。

Their indiscriminate digging of arable land for thousands of years in the clay brick-making in the production mode, and the use of local piling up Meigandan brick-making, saving a lot of farmland; Meigandan hypergolic use heat generated from the sinter completed Meigandan process saving a lot of energy; Use of the process used to bake the residual heat for drying of repression to the germ, settled weather brought drying bricks, cool bricks difficulties.

他们突破了千百年来滥挖耕地用粘土制砖的生产方式，利用当地堆积如山的煤矸石制砖，节约了大量耕地；利用煤矸石自燃产生的热量完成了煤矸石转的烧结过程，节约了大量能源；利用烧制过程中产生的余热对压制的转胚进行烘干，解决了因天气影响带来的晒砖、凉砖的困难。

Approximate IQ range of 50 to 69 (in adults, mental .IgC from 9 to under 12 years). Likely to result in some learning difficulties in school.

智力测验智商范围大约在 50 至 69 之间（成人的心智年龄自 9 岁至 12 岁以下）似乎会导致一些在学校的学习困难。

And they are still in the danger of illness and other difficulties.

他们还在危险的疾病和其他的困难。

The main difficulties are to find the functions which achieve the best constant of critical Sobolev-Hardy imbedding and to overcome the singularity of the positive solutions.

这里的主要困难是要找到Sobolev-Hardy临界时最佳嵌入常数的达到函数，同时在寻找变号解时还要克服方程正解的奇性。

The key is to take it slowly and be active about solving the problem, as opposed to letting such difficulties immobilize or panic you.

关键是慢慢处理它，积极解决问题，而不是将困难置之不理或者干脆恐慌。

However, the problem of difficulties in financing the development of SMEs has been impeding growth.

但是，融资难的问题一直阻碍着中小企业的发展壮大。

BACKGROUND: Bone marrow mesenchymal stem cells of mice are different from human and rats. The difficulties of culture, sustaining impermanency activity of BMSCs after passage and short-term effect of stem cells tracking limited the study of mice.

背景：小鼠骨髓间充质干细胞培养不同于人及大鼠，培养扩展难度高，传代后干细胞活性保持时间短；又鉴于干细胞本身特点，使现有干细胞示踪方法作用时间短，这些因素均影响小鼠骨髓间充质干细胞的实验研究。

Supported by: the Youth Foundation of National Natural Science Foundation of China, No. BACKGROUND: Bone marrow mesenchymal stem cells of mice are different from human and rats. The difficulties of culture, sustaining impermanency activity of BMSCs after passage and short-term effect of stem cells tracking limited the study of mice.

摘要背景：小鼠骨髓间充质干细胞培养不同于人及大鼠，培养扩展难度高，传代后干细胞活性保持时间短；又鉴于干细胞本身特点，使现有干细胞示踪方法作用时间短，这些因素均影响小鼠骨髓间充质干细胞的实验研究。

Blind faith and impetuosity have led them into their present difficulties.

盲从和狂热使他们陷入目前的困境。

Nowadays, most of research are to build a transmutative Petri Nets through adding controlling place sets, controlling arc sets and controlling policy to the basic Petri Nets, while the Controlled Petri Nets could be used to argue many controlling theory problems conveniently and to induce many logically and physically supervisory and solve the Event Feedback Controlling Problems and State Feedback Controlling Problem in DEDS supervisory theory.

目前大多数的研究表现为在变形后的受控Petri网基础上，利用各种方法求得各种逻辑型、结构型控制器，解决DEDS监控理论中的事件反馈控制问题与状态反馈控制问题。

On one hand, there are discussions with the works council and union about extension of short time working up to the end of September.

一方面，有讨论，工程理事会和联盟关于延长工作时间短至9月底。