双反射带通箱，由于它的导向孔在很大的频率范围内控制了锥盆动作，所以产生的失真最小，同时还表现出最好的功率承受特性。
The dual-reflex bandpass, due to the fact that its ports control cone motion over a wider range of frequencies, produces the least distortion and exhibits the best power-handling characteristics.
由于采用了双阀孔结构设计，在最大压差下排放凝结水的同时，还有一个为二次蒸汽系统设计的预设压差系统在工作。
Because of the dual-orifice design, there is a preset controlled pressure differential for the secondary steam system, while maximum pressure differential is available to discharge the condensate.
导向孔和双反射带通箱设计比密闭箱的失真更小一些，但是差别不大。
The ported box and the bandpass designs produce less distortion than the sealed box, but the difference is marginal.
从箱体阻尼损失来看，导向孔和双反射带通箱设计在极低频下比密封箱和单反射式带通箱设计有着更大的失真。
Related to the loss of enclosure damping, ported and dual-reflex bandpass designs also exhibit higher distortion levels at very low frequencies than sealed or single-reflex bandpass designs.
具有双孔截面的铝合金挤压管的断面形状满足几何相似定律。
The geometrical similarity law in cross section was satisfied for the aluminum extruded tubes with a double hollow section.
接下来，宽带双反射带通和导向孔箱体也有很好的效率。
Next in line, the wide-bandwidth dual-reflex and the ported enclosure exhibit very good efficiency as well.
输送链条：采用杭州链条厂出产的C212一寸双节距单则耳高强度双孔链条。
Transport chain:Adopt chain in Hangzhou the factory produce of C212 a stanza is apart from a list then an ear a high strength double a bore chain.
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.
介绍了精密孔内和双联齿轮或带有拨叉槽齿轮槽中去毛刺的两种方法。经实际使用：简单、可行、效果好。
The paper introduced two methods of fin cutting in precision hole and dual gear (or gear with shifter fork)slot. It is testified simple?useful and effective through practical use.
文中阐明了这种复变应力函数迭加解法的基本原理，并用此方法计算了双孔、三孔和四孔边裂纹板的若干数值例子。
The basic principles of the method are described, and some numerical examples of the radial cracks appearing at the boundary of twin, three and four circular holes are calculated.
贝尔凹陷布达特群地层裂缝—孔（洞）双介质储集特征明显，裂缝和次生孔洞是布达特群潜山储集层的重要储集类型和储集空间。
The fracture-hole double medium porosity mode develops distinctly in the research area, fracture and secondary bole-hole are the most important reservoir type and accumulating space for oil.
本系列机床是万能双柱立式车床，可用作粗精车工件的外圆、内孔、端面及内外锥面等加工。
This series are universal type VTL of double column, used for inside and outside conical, end, cylindrical and bore.
介绍了精密孔内和双联齿轮或带有拨叉槽齿轮槽中去毛刺的两种方法。
The paper introduced two methods of fin cutting in precision hole and dual gear (or gear with shifter fork) slot.
目的探讨经脐双孔法腹腔镜手术在小儿外科中应用的可行性。
Objective To evaluate the feasibility of trans-umbilicus two-port laparoscopic procedures in pediatric surgery.
目的：探讨经椎间孔双针穿刺技术在治疗腰椎间盘突出症中的可行性。
Objective: To discuss the feasibility and safety of the the double-needle technique for the treatment of lumbar disk herniation.
结论双孔二尖瓣技术是矫治二尖瓣关闭不全的一种简便而有效的方法。
Conclusions Double orifice technique is a simplified and effective method to correct mitral insufficiency.
探讨二孔腹腔镜双极电凝治疗输卵管妊娠的临床效果及价值。
Objective: To study the clinical value of the treatment of tubal pregnancy by laparoscopic bipolar coagulation.
轴向力由副叶片或平衡孔平衡，对于径向力在的规格采取了双壳体设计；
Axial force is balanced by back vane or balanceable hole, for the specification with big radial force; we adopt double-wear passage design.
著名的杨氏实验最初是用双孔，就像两个相干点源一样。
In Young's famous original experiment there were two pinholes, something like two coherent point sources.
本文介绍采用双护筒解决挖孔桩地表水渗漏问题，取得了较好的效果。
The paper introduced how to solve surface leakage of excavated pile with double protective casing and the better results have been achieved.
结论单孔或双孔钻颅血肿引流是治疗慢性硬膜下血肿的有效方法。
Conclusion Single-bore or double-bore drainage is effective in treating chronic subdural hematoma.
结果表明，氧和氮在炭分子筛中的扩散是活化扩散，该过程可用双孔模型进行描述。
The results indicate that the diffusion process of oxygen and nitrogen in carbon molecular sieve is activated, such an process may be represented by the dual diffusion resistance model.
本发明适合于作吸附剂、催化剂载体、双电层电容器及合成其它介孔材料的硬模板剂等。
The invention is adapted to be used as adsorbent, catalyst support, electric double-layer capacitor and hard-template agent for synthesizing the other meso-porous material, etc.
方法对35例二尖瓣前叶脱垂的病人行双孔成形手术，并在术前、术中、术后利用超声心动图对瓣膜进行评价。
Methods: 35 patients with severe anterior leaflet prolapse of mitral valve underwent valve repair using the double-orifice technique.
目的进一步探讨双孔成形技术治疗二尖瓣前叶脱垂的临床可行性。
Objective: To evaluate the clinical effect of the double-orifice technique in the treatment of the anterior leaflet prolapse of mitral valve.
煤层不是单纯孔隙介质，而是典型的双重介质中的双孔介质。
Coal is typical double porous medium, not pure porous medium.
目的在于通过模型试验总结出电站双孔进水口计算临界淹没水深的经验公式。
The paper presented an experimental study of the critical submergence of pressure power intakes.
目的通过总结分析先天性双孔二尖瓣畸形（DOMV）的超声表现，探讨彩色多普勒超声心动图的诊断价值。
Objective To discuss the clinical value of color Doppler echocardiography in diagnosing double-orifice mitral valve (DOMV).
目的通过总结分析先天性双孔二尖瓣畸形（DOMV）的超声表现，探讨彩色多普勒超声心动图的诊断价值。
Objective To discuss the clinical value of color Doppler echocardiography in diagnosing double-orifice mitral valve (DOMV).
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