has-been的例句大全

But variety has been aged and degenerated severely for long time because of asexually propagation and lack of effective breeding route.

因长期无性繁殖，品种老化和退化严重，但有性世代退化而缺乏有效的育种途径。

The curing agent has been prepared by one-step catalytic polymerization process with a specific chemical additive.

采用特定的化学助剂,通过催化聚合法一步合成快干型低游离TDI聚氨酯固化剂.

Ashy Starlings'( Sturnus cineraceus) group activity in autumn and early winter in Hefei has been observed from September of 2001 to January of 2002. The results manifest that at the end of September groups of Ashy Starlings inhabited on Platanus hispanica at night.

于2001年9月至2002年1月，对合肥市秋季和早冬灰椋鸟集群活动规律进行了观察。

Conclusion: Objective evaluation from local blood flow and crevicular fluid aspartate aminotransferase levels indicates that a reasonable gingivitis animal model has been established.

结论：该模型为良好的牙龈炎动物模型，龈沟液AST及局部微血流的改变均是反映牙龈炎发病程度的客观评定指标。

After decades of development, obvious progress has been made in the treatment of aspergillosis.

曲霉病的治疗经过几十年的发展有了很大进展。

The budget has been cut to the bone to deal with the crisis.

为了应付危机,预算已经缩减到捉襟见肘的地步了.

The NC system has been successfully applied in the transformation of old NC flame cutting machines.

该数控系统已成功地应用于旧数控火焰切割机的改造中.

B-contained cutting oil has been synthesized and its lubrication property was also investigated.

合成了 含硼 切削油,并考察了它的润滑性能.

Progress has been particularly disap-pointing.

进展情况格外令人失望。

He has been mourning his mother for a year.

他要为他故去的母亲居丧一年.

He has been diving into the history of English literature.

他一直在潜心研究英国文学史.

Lawrence has alwavs been an ass-kisser, but it doesn't really help him all that much.

Lawrence是个马屁精，但这并没给他带来多少好处。

After ovarian cyst has been cured, have a relapse, help look!

卵巢囊肿治愈好后复发, 帮忙看看!

A third dimension has been recently added, that of service.

最近又提出了第三方面的需求, 即服务的需要.

She has been held up as a model worker.

她被推举为模范工作者.

A development of Construction Process Mechanics-Principles of Time-Space Effect and Varying Load Analysis has been presented.

本文总结了施工过程力学的要点,并对其做了进一步发展,进而提出了 时空 效应和变载分析原理.

Of course, virtually any such initiative requires the assent of Congress, which has not been in an assenting mood.

当然，实际上所有这类提议都需要国会的同意，而国会一直没有同意的意思。

At this point in time, OpenSSH is quite stable and has proven to be immune to many of the vulnerabilities which have been reported for other SSH tools.

到目前为止，OpenSSH是非常稳定的，而且已经证明不存在其他SSH工具所报告的很多缺陷。

The Assessment Center, as an internationally popular and highly accurate method to select talented people, has been applied by governments, schools and commercial and industrial enterprises in Europe and America, but in China, it is still in its infancy.

评价中心作为一项国际上流行的、准确率较高的人才选拔方法，已被广泛运用到美国与欧洲的政府、学校和工商企业中，但在我国刚刚起步。

Tour-round-Qinghai-Lake International Road Cycling Race has been hosted five times since 2002.

自2002年以来,环青海湖国际公路自行车赛已连续举办了五届.