前顶

The front portion of it is termed ''bregma'' or ''sinciput'', developed after birth-for it is the last ofall the bones in the body to acquire solidity,-the hinder part is termed the ''occiput'', and the part intervening between the sinciput and the occiput is the ''crown''.

它的前面部分被称作前颅或前顶，在出生后发展，因为它是身体所有骨头中最后获得硬化的骨头，后面的部分被定义为枕骨，在前卤和枕骨之间连接的是顶骨。

Preservation of ethmoid bulla, opening the frontal sinus mostly keep away from anterior ethmoid artery and cribriform roof, this bring down the risk of injuries to anterior ethmoid artery and cribriform roof.

保留筛泡，在筛泡前开放额窦多数情况下可以避开筛前动脉以及筛顶，降低筛前动脉出血和损伤筛顶的风险。

During capacitation Ca〓 was present on the outer surface of IAM and in the released acrosomal contents.

精子获能前内存Ca〓主要分布于顶体外膜内侧和顶体内膜与核膜之间，并在获能和顶体反应过程被动员利用；顶体反应精子Ca〓分散存在于释放的顶体内容物中和结合于顶体内膜外侧，可能与顶体酶的活性有关；（9）。

High-density material lying at the circumference of a proacrosomal vesicle was arched with a gap in Solen grandis, but round in Solen strictus. From this gap a proacrosomal vesicle of Solen grandis began to invaginate and deform while it moved to the nuclear front. However a proacrosomal vesicle of Solen strictus did not deform until it reached the nuclear front.

大竹蛏精细胞前顶体囊的高电子密度物质分布在周缘呈一个带缺口的弧形而不是圆形，而长竹蛏前顶体囊周缘的高电子密度物质呈一圆形分布；大竹蛏的前顶体囊是先内凹变形，然后一边变形一边移动，而长竹蛏的前顶体囊是在到达核前端后才开始变形。

The study also investigates two types of planform modifications: 1. tapered vanes; 2. forward-swept and aft-swept vanes. The results show that with the same surface areas, forward-swept vanes and tapered vanes with constant height and larger length are able to improve the function on sediment control.

本研究同时探讨板顶束缩及板顶前后倾两种板形的改变，结果显示在固定面积的情况下，板高固定与板长改变的板顶束缩及板顶前倾两种形状的改变可增进潜板的效能，在决定潜板形状时，可参照二者的变化加以评估。

L. glutinosa is one of the species dominating the southern subtropical evergreen broad-leaved forest. L. glutinosa is well adapted on soil and light, with fast growth speed, which is an excellent preclimax species.

潺槁树是南亚热带季风常绿阔叶林优势种之一，对土壤、光的适应性强且生长迅速的一种优良前顶极种。

Above the brain is the thinnest and weakest bone of the head, which is termed or ''sinciput''.

在大脑上方是最薄弱的头骨，被称为"前顶"。

The brain lies underneath the sinciput; the occiput is hollow.

脑位于前顶下面；枕骨是空的。

Results: Of the slight keratoconus group: the above indexes significantly decreased(P＜0.05). Of the moderate group: the above indexes, except for the apex decentration distance significantly decreased at 12 months and more evidently at 18 months. Of the severe group, the K value significantly decreased at 12 months and other figures remained unchanged. However, all the indexes significantly decreased except that the apex decentration distance remained unchanged at 18 months.

结果：轻度组，配戴RGPCL后角膜散光、锥顶K值、锥顶偏心距离、SRI、SAI较配戴前均有显著性降低（P＜0.05）；中度组，除12个月时锥顶偏心距离、角膜散光值较配戴前无显著变化外，其他各项参数亦有明显降低，18个月时下降更为明显；重度组，12个月时除锥顶K值显著减小外，其他参数变化不大，18个月时除锥顶偏心距离的变化不显著外，其他参数显著降低。

The engine fuel shutoff valve is controlled by the engine start lever and the engine fire warning switch.

当发动机燃油关断活门关闭时，位于前顶置面板上的& CLOSED&门由发动机起动手柄和发动机火警开关控制。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐