上

The tongs all passes in the machine the gearing on the bed what tongs the gearing on realizes with superficial contact in the cowgirl on the bed in machine or matches.when the tongs installs in the machine bed work on the stage,the center of gravity of the tongs should be as far as possible low,center of gravity the more high an accepts should the dint is more big,the tongs bottom four directions should bulge,make its contact good,or the bottom establishes four a feets.when the tongs installs on the machine bed principal axis,the tongs install the to should have the enough match accuracy with principal axis cowgirl surface,and guarantee the gearing the stability dependable.

夹具体在机床上的安装都是通过夹具体上的安装基面与机床上的相应表面的接触或配合实现的。当物流设备需要的公司体在机床工作台上安装时，夹具的服装厂应尽量低，重心越高则支承面应力越大，夹具底面四边应凸出，使其接触良好，或底部设置四个支脚。当夹具体在机床主轴上安装时，夹具安装基面与主轴相应表面应有足够的配合精度，并保证安装稳定可靠。

The spore germination and gametophyte development of 21 ferns are studied. It indicates that :① the development period of prothallium and young sporophyte of the same species is different due to seeding time of spores;② the optimal temperatures of spores germination and gametophyte development of 21 ferns are about 15 -24 ℃;③ the rate of spore germination of rare ferns is much lower than the ferns which occur large populations in nature;④ the treatment with GA 3 can accelerate the germination of the spores;⑤ the prothallium changes from large to small, green to yellow when young sporophyte comes out. The prothalliums of all 21 ferns die away after the appear of the 3rd leaf of sporophytes;⑥ shapes of the 1st and 2nd leaves of the young sporophyte are different from those emerged later;⑦ spores cultured in dark can not germinate;⑧ a prothallium can develop only one young sporophyte though it has many archegoniums, and the spore propagation with leaf mould substrate is an economical method.

摘 要：以腐叶土为培养基质，对 21 种蕨类植物进行了孢子萌发和原叶体发育的研究，结果表明：①不同时期播种的同种蕨类的孢子，发育出原叶体和幼孢子体所历经的时间长短不同；②孢子萌发和配子体生长发育的适宜温度约为 15 ～ 24 ℃；③稀有蕨类的孢子萌发率低，而在野外能形成较大种群的蕨类的孢子萌发率高；④用 GA 3 处理孢子可以促进萌发；⑤当原叶体上长出幼孢子体时，原叶体由大变小，由绿变黄， 21 种蕨类的原叶体都在幼孢子体上长出第 3 片叶时消失；⑥幼孢子体上长出的第 1 、 2 片叶在形态上与以后长出的叶不同；⑦孢子萌发需要光；⑧ 1 片原叶体尽管有多个颈卵器，但仅发育出 1 株幼孢子体；⑨利用腐叶土进行蕨类孢子繁殖是一种经济实用的繁殖方法。

Results Trunk neural crest stem cells were successfully isolated and cultured. The immuocytochemcal result showed that the cells were nestin-and P75-positive. Trunk neural crest stem cells grew through adhering to chitosan fiber after inoculation. Under an electon microscope, the spindle-shaped trunk neural crest stem cells were proliferated and migrated along the fiber. The cells arranged side by side or linked by heads and tails in processes. The ends of S-100 positive cells were flat and expanded, adhering to the fiber as claw-shaped pseudopodium.

结果 采用神经管植块法培养的神经嵴干细胞，免疫细胞化学染色呈现nestin及P75双阳性，将其接种在壳聚糖纤维支架材料上，可见神经嵴干细胞贴附于壳聚糖纤维上生长；S-100免疫细胞化学染色显示，S-100阳性细胞突起的末端呈扁平状膨大；扫描电镜显示，壳聚糖纤维上的躯干神经嵴干细胞为梭形，呈现"端对端"、"肩并肩"排列，伸出爪形伪足贴附于壳聚糖纤维上。

CPLA2α mRNA signal could only be detected on 4, 5 and 8 of pseudopregnancy.

在假孕小鼠的子宫中，在第1、4、5、8天的子宫腔上皮和腺上皮中可以检测到cPLA2α蛋白的表达，但只在第4、5、8天的子宫腔上皮和腺上皮中可以检测到cPLA2α mRNA的表达。

There was a low level of basigin mRNA expression in the luminal epithelium on days 1 to 8 of pseudopregnancy and glandular epithelium on days 2 to 6 of pseudopregnancy.

Basigin mRNA在假孕大鼠子宫第1-8天腔上皮及第2-6天腺上皮持续表达，而basigin蛋白质则在假孕第1-2天的腔上皮及第2-6天腺上皮表达。

Digging the basic motives of heroines" behaviors from their psychodynamics can been seen as the depth which SiMaqian reached on heroines" psychodynamic exploration; the digging in true nature and character can be seen as the height SiMaqian reached on the height which is not in general meaning but in humanity.

对人行为动力的分析，也就是从本质上、本性上对人的探掘，因此，司马迁在这方面的分析，已不是普通意义上的人物心理的研究，而是上升到了传主人性的高度。这可以说司马迁在人物心理的探掘上所达到的高度。

I saw an advert for a robot lawn mower just punch a computer tape with distances, put the cassette in and plug in the cord. All I'll have to do is be on the lounge and watch.

我看到广告上说有一种自动推草机——只消在计算机纸带上打几个眼儿，定好距离，把纸带盒装好，插上插头，我躺在躺椅上看着点儿就行了。

The advert for I saw an advert for a robot lawn mower just punch a computer tape with distances, put the cassette in and plug in the cord. All I'll have to do is be on the lounge and watch.

我看到广告上说有一种自动推草机——只消在计算机纸带上打几个眼儿，定好距离，把纸带盒装好，插上插头，我躺在躺椅上看着点儿就行了。

So I slid out and slipped off up the road, and there warn't anybody at the church, except maybe a hog or two, for there warn't any lock on the door, and hogs likes a puncheon floor in summer-time because it's cool.

因为教堂门上没有上锁，猪在夏天喜欢上了木条铺的地板①图个凉快。你要是留心注意的话，便可以知道大多数的人总是不得不去的时候才上教堂，可是猪呢，就不一样。

This showed that the electron density of a quinoid ring increased. The peaks of the quaternary carbon atoms of the benzene rings, which were adjacent to the quinoid ring, also shifted to higher field. But the peaks of other C atoms shifted to lower field.

NMR结果表明苯胺低聚体掺杂后主链上的电荷重新分布，环上的H原子上的电子被C原子吸引，电荷密度降低，在〓 NMR中谱峰向低场移动。C原子的谱峰也相应发生变化，醌环上电荷密度增加，全部C原子的峰向高场移动，与醌环相邻苯环受其影响季碳峰移向高场，非季碳峰移向低场。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。