定向

Based on analysis to solidification process, it was proposed a new kind of hot cracking theory which was called theory about solidification contraction and its compensation.

本文针对空心叶片类铸件薄壁和在定向凝固过程中横向收缩受阻的特点，设计了定向凝固合金热裂倾向性薄板工字型精铸试样，并提出了。。。

The local Directional drilling is just staring in terrane, the equipments and the technologies cant satisfy far and far the spot construction needs, according to current circumstance and considing the existed equipments, the author put forward drilling by air hammer in terrane , having designed compounded-drilling tools,and recommended technology parameters.producing experiments have obtained good achievements in economic and in techniques.

国内定向钻进铺管技术在岩层只是刚刚起步，设备、工艺远远不能满足现场施工需要，本文针对国内、外岩层定向钻进非开挖设备及工艺现状，结合国内大多施工单位的已有设备，提出岩层空气潜孔锤导向钻进工法，设计了适合岩层钻进的实用钻具，并提出具有针对性的工艺参数，生产性试验取得了良好的经济技术指标。

This technology can do repetition measurement of well bore track, determine drilling direction and window cutting direction of sidetrack well and so on.

该技术可用于井身轨迹复测、钻井定向和侧钻井开窗定向等。

For a type of special barflies,said to be simplified,it is shown that two simplified barflies of different sizes are not basic equivalent and that any nonorientable map is basic equivalent to one of the simplified barflies.

一个不可定向地图，如果只有一个顶点和一个面，则称它为一个魔。下面将会看到，这类地图虽然简单，却能反映不可定向地图的全面情况。

Night orienteering with the aid of a head lamp is also a popular form of orienteering.

借助头灯完成的夜间定向，现在也是非常流行的定向形式。

To resolve this problem, according to the robotic theory, the paper suggests to get the moonquake waves in the horizontal plane coordinate in which the reference direction is the north pole of the moon by coordinate rotation transforming from the moonquake wave measured in the oblique coordinate.

在无人登月探测中，为免使月震计的投放装置过于复杂，也为减小月震计系统的重量、体积和功耗，以及增加系统工作的稳定性和可靠性，不给月震计增加机械的水平和定向调节装置，本文根据机器人理论，通过旋转变换，论证了可以从倾斜、非定向安装的月震计观测到的月震波得到以月球北极为参考方向的水平坐标系的观测，并从实验上作了部分验证，从而为这一难题的解决找到一条可行的探索途径。

TPO can inducing megakaryocyte progenitor cells differentiate committedly, and IL-3,IL-6 and TPO can synergized with TPO.

TPO可以定向诱导巨核系细胞的分化，IL-3、IL-6、SCF可以协同TPO的作用，这在造血调控研究，体外定向扩增外周血干细胞，促进外周造血干细胞移植患者血小板的恢复具有应用前景。

Four guide posts and V iron standers make the equipment firmer and the location of die set and head more accurate .

该机采用四导向柱，槽钢机架使设备更加坚固，模具及压头定位更精确，采用底模定向垂直定向振动和上模加压振动，大大提高生产效率，且生产的砌块密实度均匀，强度高，该机是客户首选的理想机型。

Around the age of eighteen, I realized that orienteering wasn't that difficult after all, and as my older siblings had already chosen to become orienteers, it was easy for me as a little sister to follow their footsteps.

大约在我十八岁的时候，我逐渐体会到定向越野其实没有那麼难，而且我的大哥大姐们，也都决定成为定向越野选手了，对我来说，身为一位小妹，能跟随著他们的脚步是比较容易的。

Ex: I am an orienteer, and I love orienteering.

我是一个定向员，而且我热爱定向。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。