口孔

敞口炮孔压力变化历程的理论分析与计算

A Theoretical Analysis and Calculation of the Pressure Course of Unstemmed Borehole

分析了宁夏汉延渠斗口闸孔出流存在的主要问题。

The main existing problem of discharge at the lateral gate of Hanyan canal in Ningxia is analyzed .

通过仿真得出：液控口阻尼孔直径、阀芯锥角、立柱直径、供液管路直径、顶梁及立柱刚度对立柱卸载冲击影响明显。

Through the simulation concluded that : hydraulic damping hole diameter , cone angle valve , column , liquid supply pipe diameter , top beam diameter and column stiffness on column uninstall impact significantly .

颈内动脉管外口、破裂孔、颈静脉孔距中线最小间距分别为229、84和195mm。

The smallest distance to middle line of foramen lacerum , carotid canal and jugular foramen were 22 9 , 8 4 and 19 5 mm respectively .

在颈动脉管内口（破裂孔）处，有可能控制颈内动脉。

It is probable to control internal carotid artery at internal opening of carotid canal ( foramen lacerum ) .

双线圈装：用连续的双圈铁丝绕穿过打在书本订口的方孔而成的一种活页装。

Wire-o binding : A method of loose-leaf binding in which a continuous double loop of wire runs through punched slots along the binding side of a booklet .

用田口理论建立孔、轴配合的质量损失函数，给出配合的功能极限（用户容差）和用户损失的决定方法。

The quality loss function of fits between hole and shaft are constructed with using Genichi · Taguchi 's approach . The limits of fits ' function and consumers ' loss .

家兔颅底区（枕大孔附近、颈静脉孔、颈动脉管外口和破裂孔附近）存在明确的淋巴管状结构。

In the basilar region of rabbits , such as the where near to the foramen magnum , jugular foramen , carotid foramen and foramen lacerum , there were definite structures like the lymph vessel .

通过实验优化出适合165mm×280mm矩形坯的9双侧孔水口和42四孔水口。

A two side outlet SEN 9 # and a four side outlet SEN 42 # adapted to 165mm × 280mm rectangular bloom are optimized .

翼管前口位于蝶腭孔后方约7mm，呈圆形漏斗状，横径约3mm，略向外下方开口，距离鼻小柱平均71.72mm，有翼管神经和翼管动脉穿过。

The anterior opening of the pterygoid canal was located behind the sphenopalatine foramen and had a round infundibular shape . The openings were about 3 mm in the transverse diameter and passed through by the vidian nerve and the pterygoid artery .

该装置符合国标GB12727（等效IEEE-323）和国标GB13625（等效IEEE-344）的安全要求，并具有自紧密封结构，双重防松紧固、三对取压口和附带伪孔板等特点。

This device is according to GB12727 ( IEEE-323 ) standard and GB13625 ( IEEE-344 ) standard . The features of this device also include Self-tightening , double blocking , three pairs of pressure pore and pseudo-pore plate etc.

方法选用日本大耳兔20只分为2组，采用外科的方法将兔腭前部口鼻腔形成瘘孔。

Methods 20 japanese big ear rabbits are divided into 2 groups . Form fistula in the oral and nasal cavity in the front of the palate with surgery .