main opening是什么意思

网络释义

用法例句

Development of force-aided blowout preventer in annular space logging;

新研制的助力式过环空测井防喷装置由测井助力器、防喷管、滑轮组、驴头支点和吊装绞轮 5部分组成 ,具有结构简单、操作方便等特点 ;采用该装置 ,对于大多数油井 ,尤其是液面在井口的抽油机井 ,均可顺利进行密闭测井 ,成功率为 83 % ;还可克服井场环境的局限 ,进行无井架车施工 ,节省了直接投资 ;现场试验证明 ,该装置的应用能够提高环空测井的密闭率 ,为准确录取环空测井资料提供保

Inoue Junnosuke:A Tragic Finance Minister of Japan

论近代日本的悲剧藏相——井上准之助

Inoue Junnosuke:A Tragic Finance Minister of Japan

论近代日本的悲剧藏相——井上准之助

By the"tatsuta maru,"captain t. inouye, I have shipped the twenty - five bale of cotton ordered in you favour of the 1st june.

我已将贵公司6月1日来函中所定购的25包棉花，装上船上井上武之助先生的“龙田号”货轮。

I found this very profitable in diminishing the intensity of insular prejudice.

我发现，这大大有助于消弥井蛙之见。

Get on well with each other in life and study; Help and learn from each other. Don't play or make hustle and bustle within the classroom in the spare time.

同学之间友好相处，生活、习上应该互相帮助；课余时间在教室内不准嬉戏、闹。

When the emperor read the appeal, he graciously granted tax exemption to "the five wells."

皇上阅罢状子就恩准： 大小五井，可以免税。

Colonel is the military rank between lieutenant-colonel and brigadier.

上校是陆军中校之上、准将之下的军衔。

Project supported by the Shanghai Postdoctoral Sustentation Fund,China(Grant No. ).

上海市博士后基金(批准号：)资助的课题.

Experience on the shrink shaft drilling construction reserve period

缩短立井井筒凿井施工准备期的经验

A ventilating shaft, as in a mine.

（比如矿井中的）上风井

I intend to offer as my wedding gift a drawing clock.

奉上时钟一口，聊助合卺之仪。

Project supported by the Shanghai “Phosphor” Science Foundation,China (Grant No. ).

上海科技启明星基金(批准号：)资助的课题.

Comprehensive Analysis on the Technical Economy of Precipitation of Light Well Point and Deep Well Point;

轻型井井点降水与深井井点降水之综合分析

computer-aided log analysis

计算机辅助测井分析

"Mitsui Mutual Life Insurance, Co."

三井互助人寿保险公司

These courses are far above the general level.

这些课程远在一般水准之上。

The Secretariat shall prepare name card with the above information.

秘书处会以以上资料准备阁下之名牌。

Standard for the equipment of ventilative safety of colliery

矿井通风安全装备标准

A tall framework over a drilled hole, especially an oil well, used to support boring equipment or hoist and lower lengths of pipe.

钻架竖在钻井（尤指油井）之上的支架，用来支撑钻孔设备或提升和下放钻管