设或

当气体分馏装置的轻C4组分只作MTBE原料不作烷基化装置的原料时，气体分馏装置不设或不开碳四塔是必要的，这样可节约投资和能耗。

When light C4 hydrocarbons are used as feedstocks for MTBE but not for alkylation unit , cancelling the C4 tower from the flow diagram of a grass-roots light ends plant or shuting it down in an existing unit is necessary for investment and energy savings .

在研究中不但包括设或不设GGH的工艺比较，投资分析比较，而且对具体的烟气排放情况、烟囱的防腐方案和对环境产生的影响进行了详细的阐述。

It not only analyzes the process comparion 、 investment comparison , but also has detail discussion on the gas emission condition 、 antisepsis design of the chimney and the influence to the environment .

一些高层建筑由于功能上的需要，一般要求不设或少设伸缩缝，致使高层钢筋混凝土结构长100m以上者日见增多。

At present , expansion and contraction joint is not supposed to be located or at least frequently located in average buildings for the requirements of their functions , so , reinforced concrete structure buildings whose lengths are more than 100 meters are ever-increasing by popular .

由于考虑到建筑上的美观和结构的整体性，这些建筑往往不设或少设温度伸缩缝，致使通长不设缝的结构长度远远超出了《混凝土结构设计规范》（GB50010-2002）规定的限值。

These buildings usually have no or less expansion joint , which leads to the length of whole structure oversteps the restrictive value of code for design of concrete structures ( GB50010-2002 ) .

管道敷设：室内明设或暗设；

Pipeline laying : exposed laid indoor or concealed laid ;

浅议超长砼结构不设或少设伸缩缝的工程实践

Discuss Engineering Practices with Less or without Expansion Joints for Oversized Concrete Structure

除按照署长的书面同意进行外，不得在学校工场装设或使用机器或机床。

No machinery or machine tools shall be installed or used in a school workshop except in accordance with the written consent of the director .

力学原理是建立在实验基础上的真理，也是适合于整个宇宙的公设或约定。

The principle of mechanics is to establish on the truth of experiment , and it is suitable to convention and postulation of the entire universe .

专营公司或持牌人未经署长同意，不得在前往码头或停泊处的任何进路竖设或准许竖设标志或目的地指示牌。

A grantee or Licensee shall not erect or permit the erection of signs or destination indicators on any approach to a pier or berth without the consent of the commissioner .

中国建筑的墙与欧洲传统房屋中的墙不同，它不承受屋顶或上面楼层的重量，因而可随需要而设或不设。

The walls of the Chinese building , unlike those of the conventional European building , are free from the weight of the upper floors and the roof , and may be installed or omitted as required .

为了满足建筑上美观性和结构上的整体性，这类建筑往往少设或不设温度伸缩缝，导致不设缝的结构长度远远超过我国规范规定的伸缩缝限值。

In order to meet the esthetic appearance of architecture and entirety of structure , there is usually no or less temperature expansion and contraction joint in these buildings , which leads to the length overstepping the value the code prescribed .