传统的通孔元件的焊接采用波峰焊或手工焊接。目前电路板上表面贴装元件和通孔元件混合在一起。
Through hole components welding using traditional manual welding or soldering. The circuit board surface mount components and through-hole components mixed together.
从电路板上拆除多引脚的通孔元件和大热容量的通孔元件比较麻烦，比如变压器、接插件。
Removed from the circuit board through-hole components via multi pin component and the large heat capacity is quite troublesome, such as transformer, connector.
应尽可能少地开临时出入孔并且禁止在舷顶列板和甲板边板上开孔。
But temporary access openings to be provided as few as possible and not permitted on sheer strake and stringer strake.
孔板，孔板的制造方法，液体混合装置和打印装置。
Orifice plate, method of production of orifice plate, liquid mixing apparatus, and printer apparatus.
综述了一种对印制线路板通孔镀的方法，即在孔壁上沉积有电镀用的碳黑—石墨层，以取代传统的化学镀铜工艺。
A process for through hole plating is reviewed in which conventional electroless copper plating is replaced by deposition of a carbon black-graphite layer.
对板面开孔与无孔吹风测力、板面有或无稳流板条及板条分布的测试结果，为新型划水板的设计提供了理论依据。
Results in force measurements with paddles with and without holes and those with and without flow stabilizers provide the physical basis for the design of new types of paddles.
结果表明：在开孔尺寸一定的情况下，随着板宽的增大，开孔损伤板的应力集中因数减小；
The stress concentration factor (SCF) decreased with the increase of the width of plates when the hole diameter was definite.
分析了可逆式孔板流量计和可变式孔板流量计的设计原理和实验结果。
The design element and the experiment result of reversible orifices and changing orifices low velocity flow is high.
研究认为粉喷桩的存在对地基加固区土体的孔压值影响较大，而在地基下卧层有无粉喷桩或排水板对土体孔压影响都很大。
The conclusion shows that DJM has more influence on the pore water pressure of the upper soil, and PVD and DJM both have more influence on the lower soil.
实验结果表明槽式孔板测量误差小于5%，研究结果对槽式孔板流量计的开发具有一定借鉴意义。
Experimental results indicated that maximum error of slotted orifice is less than 5%. The conclusion is available to the development of slotted orifice meter.
介绍了选择节流孔板的计算方法，包括节流孔板级数、压力差和孔径的计算。
As for the selection of throttle orifice, methods for calculating the number of orifice stages, pressure difference and orifice diameter are described as well.
阐述了孔板流量计的流量测量原理以及理论流量计算公式、标准孔板的结构形式和技术要求。
Then, its measurement principle and theoretical formula, as well as the structural style and technical requirements of standard orifice were expounded.
针对流化床中气流通过布风板时压力损失过大，本文对循环流化床冷模布风板的开孔直径和布孔形式做了数值模拟研究。
Because pressure loss oversized when gas went through distributor in FB, this article studied hole diameter and hole arrangement form in the circulating fluidized bed (CFB) by Fluent software.
文章分析了孔板的开孔率对管路最大流量、孔板前压力、孔板后压力和孔板前后压差等的影响。
The paper analyzed the influence of the orifice ratio on maximum discharge, the inlet pressure, outlet pressure, differential pressure, ect.
分析讨论了真空板芯材的泡孔尺寸、开孔率及真空度等因素对真空隔热板性能的影响并给出了试验结果。
The factors affecting its thermal performance such as the cell size, open cell ratio and vacuum pressure have been discussed and the experimental results have been reported.
结果是：有整流器时的孔板流量系数均比无整流器时的孔板流量系数稳定且波动小。
The results show that the flow coefficients of the orifice-plates with a rectifier are more stable and have less fluctuation than those without a rectifier.
对于三维塔板，由于其独特的开孔设计，其开孔率还可以有较大的提高。
On the contrary, due to three-dimensional tray' s opening designing specially, its opening rate may still improve much.
本文在简单介绍印制板孔金属化加工技术的基础上，对微波印制板孔金属化加工技术进行了较为详细的论述。
The technology of the plating through hole of the printed circuit board was briefly introduced the plating through hole technology of the microwave printed circuit board were also illuminated.
高效过滤器送风口扩散孔板的开孔情况影响着室内流场、室内空气洁净度、洁净室自净时间和扩散板阻力。
HEPA supply outlet diffusion perforation panel influences cleanroom air velocity field, cleanliness, cleanliness recovery characteristic and resistance of the diffusion panel.
目前国内外对于点支承单层玻璃板孔边应力的研究较多，但关于中空玻璃板孔边应力的研究尚不多见。
This paper calculates the maximum around-the-hole stresses of the point-supported insulating glass units with finite element method, and discusses its effect on the bearing property.
全金属孔板叠层换热器是由铜制孔板和不锈钢隔片相间叠置，采用扩散焊工艺焊接而成。
The complete metallic perforated plate heat exchanger is made of a lot of perforated copper plates alternated with stainless steel spacers, and piled up and welded each other.
锁紧板包括第一孔、第二孔和释放元件，其中第一孔能够接收从泵头伸出的钩，第二孔能够接收泵头的驱动轴。
The locking plate includes a first aperture capable of receiving a hook extending from a pump head, a second aperture capable of receiving a drive shaft of the pump head, and a release member.
综合分析了影响孔板流量计计量精度的主要因素，提出了提高孔板流量计计量精度的有效措施。
Comprehensively analyzed are the main factors that affect the measuring accuracy of the orifice flowmeter. Proposed are some effective measures to improve its measuring accuracy.
水或洗涤液中的杂质一旦沉入孔板的孔中，其大部分就会沉入底部并且静止在那里，避免了二次污染。
Once the impurities in the water or the cleaning solution sink into the holes of the hole plate, the majority can sink at the bottom and stop in order to avoid the secondary pollution.
陶板有数毫米长的空心孔，进入空心板孔内的水分，由于表面张力而存积在孔内，从而可能会引起冻害现象的发生。
There are holes of millimeters inside the terra-cotta panel; when rain water penetrates to the holes, due to the surface tension, the accumulated water may also cause freezing damage.
计量孔板由铸铁法兰，密封垫，孔板（铸铁或不锈钢）组成。
They are built with cast iron flanges, gaskets and orifice plates (either mild steel or stainless).
用于同轴电缆连接，2孔或4孔平板式安装，线路板安装，也可为用户特殊要求设计。
Style Coaxial cable, semi-rigid cable, 2 or 4 holes panel mounting, PCB mounting and custom design.
用于同轴电缆连接，2孔或4孔平板式安装，线路板安装，也可为用户特殊要求设计。
Style Coaxial cable, semi-rigid cable, 2 or 4 holes panel mounting, PCB mounting and custom design.
应用推荐