胎

According to various of the technical difficulties such as low drilling efficiency in hard rock and short service life of diamond drilling bit, analysis was made on the inherent links between blade-extruding of hot-pressing diamond and rock abrasiveness.

中文摘要：针对在坚硬致密岩石中钻进时效低和钻头使用寿命短的技术难题，分析了热压钻头的金刚石出刃与岩石研磨性等岩性之间的内在联系，认为钻头的胎体成分及其性能是关键，硬而带脆性的胎体性能有利于金刚石出刃，从而能提高钻进速度。

In order to solve the problem of low efficiency and short service life of hot pressed diamond bit when drilling in hard and compact formation, relations between diamond exposure of hot pressed bit and rock abrasiveness were analyzed in this paper. Research on matrix performances of hot-pressed diamond bit was firstly carried out.

针对在硬而致密岩石中钻进时效低的难题，本文分析了碳化钨基热压钻头的金刚石出刃与岩石研磨性等岩性之间的内在联系，认为钻头的胎体成分及其性能是关键，硬而带脆性的胎体性能有利于全刚石出刃，从而能提高钻进速度。

Results Sort the risk factors by turns according to OR value, threatened abortion, insecticide, oestrogenic hormone, tocolytic agent, organic solvent,abstergent, subcalorism and mal-medication in inchoated duration of pregnancy,conceptus age7 weeks.

结果：危险因素按OR值排序，依次为先兆流产、杀虫剂、雌激素、保胎药、有机溶剂、洗涤剂、孕早期感冒、孕早期不当用药、胎龄7周。

AIM To study the application of air sac obstetric apparatus in natural vaginal labor and its role in avoiding the conventional cesarean section in abnormal position of fetal head and the breech presentation with normal weight i nfants.

目的 通过对胎头位置异常120例及臀位60例施行气囊助产术研究，可使多数按常规处理应行剖宫产术的胎头位置异常者转化为阴道分娩，还能顺利解决正常体质量之臀位经阴道分娩。

The thesis analyzes all kind of the traditional chinese medicine literature that cured amenorrhea from Han Dynasty till now by means of literature research.

本文通过文献研究的方法，对古代各类中医文献所记载的妊娠养胎安胎食物药物宜忌相关资料进行了分析研究。

Local causes of uterine atony is the twins, fetal macrosomia, polyhydramnios, etc., uterine muscle fibers over-extended, over-expansion of the uterus, resulting in reduced post-partum resumption of non-performing.

宫缩乏力的局部原因就是双胎、巨大胎儿、羊水过多等，子宫肌纤维过度伸展，子宫过度膨胀，造成产后缩复不良。2、如果生第二胎，同样的事情未必会发生。

Parents should pay special attention to whether the baby bronchiole issues, or whether there痰多caused by respiratory obstruction, and that leads to the causes of neonatal respiratory distress include: low birth weight, the mother has a history of diabetes, premature rupture of membranes, meconium pollution, birth mother irregular fetal heart tone, prolapsed umbilical cord, the fetus had cooked, prematurity, multiple births, chest, heart or respiratory abnormalities.

家长要特别留意宝宝是否有细支气管方面的问题，或是否有痰多造成呼吸阻塞的现象，导致新生儿呼吸窘迫的原因包括：出生时体重过低、母亲有糖尿病史、胎膜过早破裂、胎便污染、妈妈分娩时胎心音不规则、脐带脱垂、胎儿过熟、早产、多胞胎、胸腔、心脏或呼吸道异常。

You say it is child bud, but also 60 days after birth in order to shoot to see.

你说的是胎芽吧，不过胎芽也要60天后才能看到的。

Materials and Methods The primary osteoblasts separated from calvarium of 10 fetal rats were cultured and a finite cell line was established in vitro.

材料和方法选用SD胎鼠颅骨作为细胞原代培养的组织来源，建立胎鼠成骨细胞有限细胞系。

Normal rat embryos and embryos with ARM from gestational days 12.5 to 20 were sectioned serially and sagittally and stained with HE to observe development of cloaca and anorectum continually and contrastively.

胎龄12.5天-20天的正常及泄殖腔发育畸形的胎鼠正中矢状面连续切片，HE染色，连续动态对比观察泄殖腔及肛门直肠的发育过程。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。