螺纹

Some polypide surface membrane and food vacuole membrane showed multilayer thread-like change.

有些虫、食物泡呈现多层螺样改变。

Methods To fixup internally by Luowenke s needle on 48 cases of displacement clavicle fracture.

方法将48例锁骨移位性骨折患者行切开复位螺克氏针内固定。

Good toughness and thermal cracking resistance.Used in the stands of prefinish rolling.Suitable for hot rolling thread steel.

具有优良的韧性和抗热烈能力,适用于预精轧机架和热轧螺钢.

The mainstructure parameters of spirally grooved tube are diameter of tube, fin pitch,corrugation depth, wall thickness, spirally angle and spira.

螺旋槽管(亦称螺管)是其中的个重要支,它是种优良的高效异形强化传热管件。

A compression moulded part, which has nut inserts and flanges at both ends, is difficult to demould and set in the inserts.

塑件外侧两端各有突缘，且内嵌内螺嵌件，造成侧凹脱模和嵌件置入困难。

With certain shapes of or canula, elongated caps are made to cover both canula and threaded portion, and seal the canula at its top.

根据管口和导管的不同形状，可以制造细长的管盖以覆盖导管和螺，并在顶封住导管。

This paper researches into enhanced heat transfer of condensation of splitting gas of waste plastics and R113 on the general smooth tubes,the screw tubes and the aculei finned tubes.

本文研究制冷剂R113和废塑料制汽油过程中产生的裂解气在水平光滑管、螺管与“犁刺”管上的冷凝强化传热。