裂孔

28 Span in the main line bridge overpassing Huning Railway in A30 Expressway of Shanghai North Ring, and introduces the anti-crack measures taken in the construction and the results.

该文对上海北环A30高速公路上跨沪宁铁路主线桥第28孔薄壁墩施工中可能出现的问题进行了分析，并介绍了施工中采用的防裂措施和效果。

By some parameters of models which accord with pre-splitting blasting , regresses a logical equation about there parameters .

再根据几列符合预裂爆破要求的模型的参数，回归推导出关于孔距、线装密度和不耦合系数这三个参数的简易关系式。

To increase lump coal ratio in stopes, a scheme is put forward for coal falling by loose pre-shearing millisecond blasting, and hole arrangement parameters and blasting parameters are adjusted.

为提高炮采面块煤率，提出了松动预裂微差爆破的落煤方案，并对布孔参数和爆破参数进行了调整。

Natural frequency of flows and abutment pier of surface pitting and that of unit should be staggered relatively in order to prevent the resonance..

通过本文研究可以给出厂房结构的应力、应变以及变形图，得到厂房结构的自振频率和振型，对结构配筋和防裂进行指导，使厂房流道、表孔边墩的自振频率同机组频率要相对错开，以防止共振。

The pollen grains are monad, small, radically symmetrical, and tricolporate, with a spheroidal to subprolate shape in equatorial view and three-lobed circular shape in the polar view.

结果表明，钩藤属植物的花粉为单粒，小型，辐射对称，赤道面观圆球形至近长球形，极面观3-裂圆形，具3孔沟，萌发沟裂缝状，长达两极。

Methods The 3-5 generation fibroblasts were inoculated in 24-well with rat-tail collagen. A denuded area was made when the 3 generation of the fibroblasts was influent into a monolayer. Cells were then exposed to the presence of various concentrations of viper venom, mitomycin C, and the cells migrated into the denuded area were counted evely 6 hours.

将培养的第3~5代人结膜下成纤维细胞接种于涂有鼠尾胶原的24孔板中，待细胞生长融合后在培养板上划线，造成无细胞的裸露区，分别加人不同浓度的蛇毒制剂、丝裂霉素C及二者的混合液，每6h观察记录移行至裸露区的细胞。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。