查询词典 tubes

With this fracture model, some important results are obtained for composite thin-walled circular tubes under axial compression; the calculation of the critical delaminate load is gained based on the linear elastic analysis As for the dynamic loading, this delaminated model modified in depth by introducing a dynamic factor will be helpful.

利用该模型本文得到一些重要的结论，并给出压缩载荷临界判据。利用该模型研究复合材料圆管的轴向压缩承载行为，为后继动力轴向压缩问题的研究奠定基础。

In this paper, the load-displacement and skeleton curve of dendriform connections to the concrete filled square steel rectangular tubes under low-cycle reversed loading was calculated by fiber line element model, which is based on the relation of the stress-strain of steel and concrete and is compared with the FE and experiment.

本文在确定了往复应力作用下钢管混凝土的钢材和核心混凝土的应力－应变关系的基础上，利用纤维杆元模型，有限元模型对钢管混凝土Y形柱和十字形钢梁连接的节点的荷载－位移滞回关系曲线及其骨架曲线进行了计算，并与试验结果进行了比较。

Objective To comparatively analyze HIV-antibody and biochemical detection results before and after serum samples were treated with heat-inactivation at 50℃ for 30 minutes and at 60℃ for 20 minutes. Methods 297 healthy individuals and 25 patients with positive HIV-antibody who were confirmed by HIV/AIDS confirmatory laboratory were involved into this study. Their blood samples were collected into three vacuum and desiccative tubes.

职业暴露感染，主要是指医疗器具不洁，造成接受医疗服务者感染HIV，其中也包括医务人员在提供医疗服务时，不慎被污染HIV的器具如针头、锐器等刺伤皮肤，或黏膜、破损的皮肤直接接触到含有HIV的体液，而被感染。

The author designs an extrusion head used to produce a kind of medical interventional catheter which adopts an integral core rod, a round-hole diffluent bracket and an extrusion head with double tubes ,and introduces the designing process in detail.

设计了一种医用微细介入导管的挤出机头，其特点是采用了整体芯棒、圆孔分流支架和双管机头结构，并详细介绍了该挤出机头的设计过程。

An integral core rod, a round-hole diffluent bracket and an extrusion head with double tubes to the extrusion head were applied in extrusion head designing,and the designing process of the ex-trusion head was introduced in detail.

mm的医用微细介入导管，设计了一种专用微管挤出机头，其特点是采用了整体芯棒、圆孔分流支架和双管机头结构，详细介绍了该挤出机头的设计过程。

An integral core rod, a round-hole diffluent bracket and an extrusion head with double tubes to the extrusion head were applied in extrusion head designing,and the designing process of the ex-trusion head was introduced in detail.

针对一种材料为低密度聚乙烯、外径1.0 mm、内径0.4 mm、壁厚0.3 mm的医用微细介入导管，设计了一种专用微管挤出机头，其特点是采用了整体芯棒、圆孔分流支架和双管机头结构，详细介绍了该挤出机头的设计过程。

This paper reports an eolation used several years since 1993 for weight calculation of casting MC Nylon tubes.

通常，MC尼龙用户对MC尼龙管成品内外径都有一定公差要求，过小过大都不能接受。

But a child's eustachian tubes are narrower and shorter than those of an adult.

但是，儿童的咽鼓管管狭窄和更短的比成人。

It may be caused by viral or bacterial infection, by the production of unusually thick mucus, or by a problem with the Eustachian tubes.

它可能引起的病毒或细菌感染，所生产的不寻常厚厚的粘液，或由一个问题与咽鼓管管。

And children may suffer airplane air more easily than adults because their Eustachian tubes are small and easily blocked.

儿童比成年人更容易得飞机耳，因为他们的耳咽管小，容易堵塞。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。