The microstructure and property of the free cutting unquenched plastic die steels have been studied.

研究了易切削系非调质塑料模具钢组织与性能。

The microstructures were studied with optical microscope, X-ray diffraction,electron probe and glow discharge spectro scopy analysis.

用光学显镜、X-光、电子探针及辉光逐层分析等方法进行了分析。

Through XRD and the SEM microscopic test method, the microstructure of hydro-thermal synthesis hardenite has studied .

通过XRD和SEM试手段，研究了粘土-硅质石屑-水泥-石灰体系水热合成硬化体组成结构。

The relation of internal microstructure damage degree of furnace tube in a ethylene pyrolyzer with weldability was studied.

研究了乙烯裂解炉服役炉管材料内部组织损伤程度与焊接性关系。

As shown in Fig.1, precipitates microstructure confirms that near solvus temperature precipitation can limit grain boundary precipitation.

由调整温度, 五谷降雨雪由生核能量制并且唯一晶界降雨雪存在。

The effects of carbonous density and solid volume loading on the microstructures, and the performance of the new method were investigated.

通过对焊缝金相显结构分析,结合计算机图形处理软件计算出焊缝烧结密度。

By means of analysis, hardness test, abrasion test, this paper studies the effect of boron-sulphurizing on microstructure and properties of boronized layer.

通过金相分析、硬度试、磨损定，研究了硼硫共渗对渗硼层组织和性能。

The observation on the microstructure of six orchids demonstrated that they have the typical orchidaceous roots with velamen and thick cortical tissue.

本文对密花石斛等六种兰科植物根显结构进行了比较察。

Effects of master alloy of quasicrystal containing magnesium additions and solution treatment on microstructure and mechanical properties of AZ91 magnesium alloy were studied.

研究了镁基准晶中间合金和固溶处理工艺对AZ91合金显组织和力学性能。

The microstructure of a multiphase material was optimized, and property of auxetic performance was obtained, helping to prove the validity of this method.

以一种多相材料结构为例进行了细结构优化，并获得了具有负泊松比特性，从而验证了所提出方法合理性。

Analysis of the Stem-fillet blend fracture of exhaust valve was conducted by means of macroexamination, microstructure examination, chemical composition analysis and hardness test.

摘要采用宏、检验、化学成分分析和硬度试等方法对断头排气门进行了分析。

The microstructure of the sample glaze layer under polarizing microscope and reflecting microscope has showed acicular hausmannite crystals on the glaze layer sur...

通过偏光显镜和反光显镜察试样釉层显结构,发现虹彩釉在成釉过程中釉层表面析出了针状黑锰矿晶体。

An investigation was made on the effect of rewelding on mechanical properties of Ultra-low carbon austenitic stainless steel based on mechanical properties test and microstructure examination.

通过对反复焊接1～5次超低碳奥氏体不锈钢力学性能试验及金相组织分析,研究了反复焊接对超低碳奥氏体不锈钢力学性能。

Microstructure analysis showed significantly consistent change in nodule counts and possibly the numbers of microshrinkage pores present from the bottom to the top of heavy-section casting.

在厚断面 铸件取样位置不同时，由于浇铸凝固时间不同，疲劳强度也不同。

Based on the macroscopic characteristics, microstructure and fabric of the tectonite in the Yingxin fault zone,this paper proves that there are two types of tectonite, i.

依据龙门山中段映秀断裂带构造岩宏地质特征、显构造及组构特征，论证了构造岩具有脆性和韧性两大类型，形成序次上为先韧性后脆性。

The microstructure deformation in the aging process of the alloy has been stated ,and the heteromorphy has been found the cause of the natural aging process of the 2011 alloy .

分析了工艺参数对合金力学性能,阐述了合金时效过程中组织变化,找出了2011合金自然时效进程缓慢原因是异质形核。

Microstructures of coal containing iron ore concentrates reduced by microwave heating are classified as the metal iron microstructure, the wustite microstructure and the slag phase microstructure.

波加热含碳铁矿粉还原矿相结构分为金属铁、浮氏体和渣相结构。