A needle dust as the model of the intergalactic dust is emploied, which is used to explain the reason why the supernova light tracks intergalactic space do not redden obviously.
建立了星系际尘埃的针型模型，该模型能很好地解释高红移超新星的星光通过星系际空间时没有产生明显红化效应的原因。
Grounding on the condition of force acting on the fluid in the syringe needle, a simple evaluation model is attained for the flow rate and the dot volume.
针对针尖胶体的受力情况，建立了一个简单的流量或胶点体积估计模型。
The force model of the jig needle bar in the process of grinding diamonds were analyzed, and the calculation formula of grinding force was established.
分析了宝石磨削过程中的夹具针杆的受力模型，建立了基于因次解析法的夹具针杆磨削力计算公式。
The utility model discloses a moving needle bar device used for a knitting machine, which is a part of the knitting machine and which belongs to the knitting machine field.
本实用新型公开了一种用于针织机的移床装置，即移动针床装置，它是针织机中的一个部件，属于针织机械领域。
The utility model discloses an automatic alarm for needle-type transfusion, which belongs to the manufacturing technical field of transfusion alarming devices in the hospital.
本实用新型公开一种针式输液自动报警器，属于医院输液报警装置类制造技术领域。
The utility model provides a curve two-needle sewing machine, which belongs to the technical field of machinery.
本实用新型提供了一种曲折双针缝纫机，属于机械技术领域。
The utility model is composed of a central shaft road, a turning block, and a scribing needle.
本实用新型是由中心轴杆、转动滑块和划针组成。
The utility model relates to a special external fixation of fracture device used for treating fracture. The device comprises a bone needle for bone piercing and a frame for fixing the bone needle.
本实用新型是一种用于治疗骨折的专用器械骨折外固定器，它包括穿骨用的骨针和固定骨针用的框架。
The utility model has the advantages of exact and targeting needle selection with high mechanical conversion efficiency.
本实用新型选针精确到位、机械转换效率高。
The utility model has the advantages of exact and targeting needle selection with high mechanical conversion efficiency.
本实用新型选针精确到位、机械转换效率高。
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