颈

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。

The cervix is the flexib1e region between the head and prothorax.

颈是头部和前胸之间可曲的区域。

Objective:Discovery and cure neck main center nervous skin pruritus;Proposed the new diagnosis method and the standard.

目的：发现与治愈颈性中枢神经性皮肤瘙痒症；提出新的诊断方法与标准。

The back of the pubis for the transvaginal needle bladder neck suspension operation was an effective method for the treatment of female stress incontinence.

耻骨后经阴道膀胱颈悬吊术式是治疗女性压力性尿失禁的一种理想方法。

Abstract］ Objective To investigate the therapeutic efficiency of the back of the pubis for the transvaginal needle bladder neck suspension operation in female stress incontinence.

摘要］ 目的探讨耻骨后经阴道膀胱颈悬吊术治疗女性压力性尿失禁的疗效。

Pull the bottom strap over your head and position it around the neck and below the ears. If there is only 1 strap, it should rest high at the back of your head.

如果有两根头带，将上面的头带戴在头顶的位置，将下面的带子套过头顶放在颈后，位于耳朵的下方。

Results The results showed that Erigeron breviscapus pellets significantly increased brain blood flow and prolonged mouse pursiness time;Erigeron breviscapus pellets markedly inhibited ADP-,AA-,or PAF-induced platelet aggregation in vitro or in vivo,and prolonged the occlusion time of electrically-stimulated carotid artery.

结果 灯盏花颗粒显著增加脑血流量并延长小鼠断头后喘气时间；灯盏花颗粒在体内外均明显抑制AA、ADP及PAF诱导的血小板聚集功能的同时还显著延长电刺激大鼠颈动脉的血栓形成时间。

Objective The arteria carotis externa was ligated, and arteria carotis interna was kept opening The left carotid artery was exposed and placed over an ultrasonic flow probe. The brain flow volume was recorded with an ultrasonic volume meter. The pursiness time of mice was observed to evaluate the effect of Erigeron breviscapus pellets on cerebral ischemia.

目的 应用二道血流速度流量仪超声探头测定大鼠颈总动脉以反映云南植物药业有限公司提供的灯盏花颗粒对脑血流量的影响；记录小鼠断头后张口喘气时间，观察灯盏花颗粒的抗脑缺血作用。

The left carotid artery was expose and placed over an ultrasonic flow probe.The brain flow volume was recorded with an ultra-sonic volume meter.The pursiness time of mice was observed to evaluate the effect of tianma xingnao capsule on cere-bral ischemia and anoxia.Methods The permeability of normal blood-cerebral barrier was investigated in mice.

目的 应用二道血流速度流量仪超声探头测定大鼠颈总动脉，以反映云南省昭通制药有限公司提供的天麻醒脑胶囊对脑血流量的影响；方法记录小鼠断头后张口喘气时间，观察天麻醒脑胶囊的抗脑缺血缺氧作用；小鼠尾静脉注射Evans溶液，测定脑组织Evans的吸光度以反映药物的血脑通透性。

Huge quadrupedal herbivore with long neck and tail; of late Jurassic in western N. America.

巨大的四足食草性恐龙，长颈长腿；生活在后侏罗纪时期的北美洲西部。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。