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The results showed the specimens by vacuum sintering had a typical Widmannstatten microstructure, which possessed coarser prior β-grains and secondary platelet α+β-phase, but the alloy had a more microporosity and a lower tensile strength and ductility. After HIP treatment, prior β-grains and secondary platelet α+β-phase became fine and uniform, and the alloy possessed a less microporosity and a higher tensile strength and ductility.

结果表明:真空烧结Ti-6Al-4V合金具有典型的魏氏体组织,其初始的β晶粒粗大,β晶粒内为次生片状α和薄β相片,空隙较多,合金的强度和塑性较低;合金经热等静压处理后,组织明显细化且均匀,空隙很少或几乎没有,从而强度和塑性都有所提高。

The earliest evidence of primitive forms of counting occurs in notched bones and scored pieces of wood and stone.

有关计算基本形式的最早证据出现在锯齿状的骨头和有刮痕的木片石片上。

Sepals ovate or oblong, base of lateral pair saccate or not, margin membranous.

或长圆形的萼片卵形,囊状的侧对的基部与否,边缘膜质。

To resolve the low efficiency and high energy consume problems of traditional ball mill in the preparation of micrometer and nanometer sheet metal powder ,new type ball mill was designed by combining the crushing theory and structure of traditional ball mill and mix mill.

为了解决目前普通球磨机在制备微纳米片状金属粉时存在的粉碎效率不高、能耗高等问题,结合球磨机和搅拌磨的粉碎原理和结构,设计并研制了一种内部搅拌轴和外部筒体反向旋转的球磨机。

Especially,the complex relative permittivity of the coated barium ferrite composite was much higher than that of the uncoated barium ferrite particles in the most frequency range.

六角晶系铁氧体具有较高的饱和磁化强度、特殊的六角片状结构、良好的化学稳定性和耐腐蚀性能,在微波吸收等领域具有广泛用途[2-3]。

Further,semisteel,V_2O_5 flakes and titanium dioxide are achieved separately according to vanadium recovery from hot metal/vanadium slag and titanium recovery from titanium-beating sl.

通过进一步的铁水提钒、钒渣提钒和硫酸法提钛处理,生产出合格的半钢、片状 V_2O_5和钛白产品,元素回收率分别达到88%、 42%和75%,最终实现了铁、钒、钛的分离和综合回收利用。

Spikelets with 2–7 florets; rachilla thick, disarticulating below each floret; glumes shorter than lemmas, 1–3-veined, cartilaginous in lower part, apex obtuse or acute; lemmas oblong to ovate, subcartilaginous, 3–5-veined, glabrous, strongly keeled above middle, apex obtuse; palea as long as lemma, scabrid along keel.

小穗具2-7小花;在每小花下面厚,脱节的小穗轴;颖片短于外稃,1-3脉,软骨质的在下部,先端钝或锐尖;外稃长圆形到卵形,subcartilaginous,3-5脉,无毛,强烈龙骨状的在中部以上,先端钝;内稃倍于外稃,沿着龙骨粗糙。

In addition, the variety of crystallization and plate like structure of Talc are also the reasons reinforcing rubber and Nylon.

此外,材料结晶度的变化和滑石粉片状结构的贡献,也是补强橡胶和尼龙的一个原因。

And then adding NAA at low concentration in MS was used to give rise to roots. We also found that lower level of hormone could control effectively browninng and vitrifaction during the culture and G1 n (6mg/L) and AgNOj (2mg/L) supplemented in shoot induction media could improve the shoot information rates apparently (about90%).The whole period of plant regeneration from leaflets of peanut could be divided as five steps: germination - shoot induction -shoot elongation-rooting- tranplant.

用1/2MS培养基萌发花生种子,9-10d后,从无菌花生苗上切取幼嫩叶片中部为外植体。2500Lux光照和27±1℃条件下,在诱芽培养基(MS+BA3mg/L+NAA0.8mg/L+AgNO_32mg/L十Gln 6mg/L)培养12-14d即可观察到明显芽点或瘤状突起,较前人报道的培养时间大大缩短了,4w后芽点进一步发育成丛生芽,芽诱导率达90.2%,每个外植体平均产9个丛尘芽,然后转至培养基MS+BA3 mg/L+AgNO_32 mg/L上诱导芽的伸长,3-4w后可长至3-4cm,切下带有2-3片叶片的幼芽移至生根培养基(MS+NAA0.8mg/L+AgNO_32mg/L),1w后切口处可见白色不定根形成。

Degaussed resistance is generally rectangular black phenolic resin, there are two or three pins, there are one or two thermal resistance, thermal resistance and some form of sheet is yellow body, two primers feet, like a large round high-voltage ceramic capacitors.

消磁电阻一般是黑色的长方体酚醛树脂,有两个或三个引脚,里面有一个或两个热敏电阻,有的热敏电阻外形是黄色的片状体,有两个引脚,就像一个大的圆形高压瓷片电容。

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By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候,里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色,卵在发育96h后卵基本全部孵化。

There was a conflict between plebs and patricians in ancient Rome in 494BC.

在公元前494年,罗马发生了一次平民反对贵族的斗争。