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Effect of Re and Ta Addition on the Formation and Decomposition of Primary Carbides in a 2nd Generation DS Superalloy.

Re、Ta对第二代定向柱晶合金中初生碳化物形成与分解的影响。

Primary phloem PHLOEM derived from the procambium in the young plant.

初生韧皮部:指幼嫩植物中来源于原形成层的韧皮部。

Primary xylem Xylem derived from the procambium in the young plant.

初生木质部:指幼嫩植物中来源于原形成层的木质部。

The FTIR analysis indicated that there was no or very little suberin in endodermis radial wall of cotyledon compared with primary and two-year-old leaves. Furthermore, the content of suberin in endodermis of the primary leaves was lower than that of two-year-old leaves.

根据FTIR的检测结果显示:子叶内皮层细胞径向壁不含木栓质或极少,2 a生针叶内皮层细胞径向壁木栓质含量高于初生叶。

It takes about 0.5 h for a pollen tube from germination to arrive at the micropyle. About 0.5 h after pollination, the pollen tube releases two sperms into one synergid. At 0.5-2.5 h after pollination, the egg cell fuses with one sperm to form a zygote. About 10.0 h after pollination, the division of the zygote begins. The duration of the zygote lasts about 2.5-10.0 h. However, one sperm nucleus fuses with two polar nuclei at 1.0-3.0 h after pollination, and 5.0 h after pollination the primary endosperm nucleus begins to divide.

水稻受精过程经历的时间表如下:授粉后,花粉在柱头萌发;花粉萌发至花粉管进入珠孔大约需要0.5小时;授粉后0.5小时左右,花粉管进入一个助细胞,释放精子;授粉后0.5-2.5小时,精卵融合形成合子;授粉后约10.0小时,合子第1次分裂,合子期为授粉后2.5-10.0小时;授粉后1.0-3.0小时,精核与两极核融合;授粉后约5.0小时,初生胚乳核分裂。

The RSF filament with xanthate was produced by wet spinning process.

用自透析湿法纺丝,制得含黄原酸盐的再生丝素初生纤维。

The results show that the normal process begins with archesporial cell and undergoes stages of primary and secondary sporogenous cell,microspore mother cell,dyad,tetrad,central nucleus microspore,vacuolated microspore,mature microspore,twocell pollen and threecell mature pollen.

对平流层辐射处理SP3谷子和对照CK3谷子雄性细胞发育的研究表明,雄性细胞正常发育过程从孢原细胞开始,经初生造孢细胞、次生造孢细胞、小孢子母细胞、二分体、四分体和单核小孢子中央期、单核小孢子液泡期、单核小孢子成熟期直到二细胞花粉、三细胞成熟花粉结束。

The main work and conclusions as follows:(1) Osteoblasts were delievered and cultured from the new-born Wistar rats calvaria by the digesting method.

主要工作和结论如下:(1)采用消化法从初生大鼠的颅盖骨中分离、培养成骨细胞。

The energy-dispersive X-ray analysis showed that the endodermis with Casparian strips in primary and two-year-old leaves functioned as apoplastic barriers against Na and Cl. However, no blockage of Na and Cl in cotyledon was observed when they passed endodermis.

对相应区域的X射线微区分析表明,子叶内皮层对Na和Cl在质外体运输中不起障碍作用,而初生叶与2 a生针叶内皮层阻碍Na和Cl以质外体途径进入维管组织。

After the alloy being HIPped and annealed, themicrostructure of Ti-45Al-7Nb-0·15B-0·4W alloy is primaryγphase and lamella, and the needle-like and granularβphase precipitates.

经过热等静压和均匀化处理后Ti-45Al-7Nb-0·15B-0·4W合金的基本形貌为初生γ相+层片状晶团,有β相析出,其形貌为针状、点状、颗粒状。

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