查询词典 bore

Based on gun bore radial wear Δdmax as discrimination condition of barrel life the mathematical model for predicting melt-erosion of gun-barrel is established which is employed in analyzing factors affecting the life of gun such as material, gun powder,firing conditions and so on. It is pointed out that active cooling technology is an effective method for solving many problems concerned with heat transfer each time the gun is fired.

文中由身管寿命判别条件△d_建立了身管熔化烧蚀预测计算模型，从原理上对各种延缓烧蚀速度、提高身管寿命的措施，如采用内膛镀铬、使用冷火药和护膛剂等进行了阐述；同时基于该模型指出采用身管主动冷却技术是延长火炮身管寿命最有效的措施之一。

This thesis proposes a kind of soft firing technology , which combines interior ballistics with atmospheric pressure transmission theory , utilizing the energy of advancing primer ignition of piston promoting pill to counteract the counterforce of firing pill , utilizing unilateral valve on the piston to adjust automatically the gas pressures of two connected chamber in series in front and at the back of the piston, thus achieving the goal of reducing composition of forces of gun bore and increasing initial velocity of pill.

本论文提出一种软发射技术，是将气压传动理论和经典内弹道学相结合，利用活塞推动弹丸前冲击发的能量来抵消发射弹丸所产生的反作用力，利用活塞上的单向阀自动调节活塞前后两个串联药室的气体压力，从而达到减小炮膛合力和提高弹丸初速的目的。

Several nitramine propellants are quenched at different initial pressure(up to 300 MPa)by rapid pressure decay in a small-sized ballistic simulator, which is different from the ordinary vented chamber in that it creats the burning environment of the propellant similar to that gun bore,and that the initial pressure before the extinction are relatively high.

用改进的小型弹道模拟装置，对几种硝胺发射药做了中止燃烧实验，中止压力达300MPa，并对中止燃烧样品做了SEM电镜观察。

After another line-of-sight aim through the open bore, the gun was loaded and Colby gave a jerk on the lanyard.

又一次炮膛直瞄，大炮装弹，科比上尉猛拉引火绳。

Therefore, to improve the machining efficiency and satisfy the processing requirements, the boring headstocks are designed which are used for the unit machine tool, which is used to roughly bore the holes of the double rebar and feet parts.

因此，为了提高生产效率，满足加工要求，本课题设计了用于加工双筋蹄零件的镗铰组合机床之镗削主轴箱。

Heart-rending distress; Marius bore a passion in his heart, and night over his eyes.

便连痴情的那种刺激本能和启人急智的力量他也失去了。

3Hs on with the all mechanical measuring instruments like micrometer, dial bore gauge, vernier, height gauge etc.

能熟练使用各种测量仪器，像千分尺，游标尺，高度游标卡尺等。注：简历请附英文的，请勿重复投递！

3Hands on with the all mechanical measuring instruments like Micrometer, dial bore gauge, Vernier, Height Gauge etc.

能熟练使用各种测量仪器，像千分尺，游标尺，高度游标卡尺等。注：简历请附英文的，请勿重复投递！

Through comprehensive applications of many key projects,such as well location optimization technology,mixed oil drilling technology combined with using popularized PDC bit s of high efficiency and high torque and low-velocity hobs of great power, deep well bore contro.

通过井位优选技术、推广高效 PDC 钻头和大功率高扭矩低速螺杆的复合钻井技术、深井井身控制技术、以防漏堵漏为主的调整井钻井技术等各项攻关课题的综合应用，形成了一系列的深井优快钻井综合技术，大打钻井科技攻坚战，取得了钻井速度的新突破。

The packed ice bore down on the ship.

浮冰向船逼近。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。