Graduate teaching assistants are neither fish nor fowl, neither completely students nor teachers.

A button fell off my coat and I could find neither hide nor hair of it.

我的大衣掉了一颗扣子;我到处找也找不到.

No one has seen hide nor hair of him since.

此后没人见到过他的影子.

I've not seen hide nor hair of him all week.

我整星期连他的影子都没看见.

He can neither read nor write (= he cannot read or write) .

他既不会读也不会写。

Nor yet a sweet consort from broken strings.

不奢望断弦弹奏出甜美的乐章.

I have never voted for him, nor yet intend to.

我从未投他一票, 也没打算投他一票.

She worked with an air which was not quite professional detachment, nor yet human tenderness.

她的态度既非完全是职业性的超然, 也不全是人世间的恻隐之心.

He will not accept help nor yet advice.

他,不要说帮助,连劝告也不会接受的.

I don't like the red one nor yet the brown one.

我不喜欢那红色的,也不喜欢那褐色的.

It's easy to correct breech birth position by raising the buttocks and lying on one's side, which can reduce greatly the rates of breech birth and perinatal mortality and ensure the health of mother and infant.

抬臀侧卧纠正臀位简单易行，能大大降低臀位发生率，降低围产期婴儿的死亡率，确保母婴的身体健康。

To correct breech birth position by raising buttocks and lying on one's side& a analysis of 120 cases

抬臀侧卧纠正臀位120例分析

Mean While, loading force provided by the force loading maintainer has been compared with the actual breech pressure, and the method which more in line with practical gun pressure has been put forward.

同时，将动力加载机构提供的加载力与实际膛内压力进行对比，提出了使其更加符合实际膛压的方法。

Impact stress of buffer spring in machine gun cartridge extraction in automatic-weapons under high breech pressure& a theoretical study

自动武器中缓冲簧的撞击应力自动武器高压抽壳理论研究

And calculated breech pressure, muzzle velocity and discharge parameters agree with experimental results.

同时，计算的膛压、初速、放电参数与实验基本符合。

Breech position caesarean sectionshouldmaster the skill of breech extraction, operating according to breech deliverymechanism.

对于臀位剖宫产应掌握好臀牵引术的技巧，应按臀位分娩机转进行。

Their methods delivery included 73 cases of assisted breech delivery, 86 cnses of breech extraction, 40 cases of cesarean section and 5 cases of breech extraction plus craniotomy.

，均系臀牵引术分娩.臀助产73例，臀牵引86例，剖宫产40例、牵引+穿颅术5例。

Results Compared with natural delivery, in presence of assisted breech delivery, breech extraction, application of vacuum extractor, and cesarean section, the incidence rate of neonatal asphyxia increased significantly ( P < 0.01).

结果①臀位助产、臀位牵引、胎头吸引术、剖宫产术的新生儿窒息率经统计学处理明显高于自然分娩率（P<0.01）；

Results Fetal hypoxia, birth injury, premature, postmature pregnancy, huge baby, difficult vacuum extraction, forceps operation and breech extraction were the most dangerous elements of intracranial haemorrhage of newborn.

结果：新生儿颅内出血与胎儿缺氧及（或）产伤有关，早产、过期妊娠、巨大儿、困难的胎吸、产钳术、臀位助产术是颅内出血的高危因素。

The breech lock closure type heat exchanger is characterized by reliable sealing performance, easy dismantling and assembling, high utilization ratio of heat exchange area and small grounding.

螺纹锁紧环换热器具有密封性能可靠，拆装方便，换热面积的利用率高，结构紧凑，占地面积小等特点。

Based on different theories and techniques for the reduction of stress concentration, and on the basis of forms of breech ring fillets in general use, over a dozen of fillet forms are proposed.

根据降低应力集中的理论和技术措施，在现有常用的炮尾闩室圆角的基础上，提出了十几种圆角形式。