Through hole drilling on the dam site, the physical and mechanical characteristics of the riverbed layer and the components of the layer material are studied.

Wherein the floating plate is positioned in a water tank, which has a fixing piece and a through hole;

浮板，位于水箱内，浮板上设有固定件与透孔；

11950s: mass soldering for Through Hole Technology ( THT)& wave soldering appeared;

1950年代：通孔插装的群焊技术&波峰焊技术出现；

Combining ray tracing with algebraic reconstruction technique ( ART), ultrasonic Lamb wave tomography for through hole flaws is developed.

综合射线追踪与代数重建技术（ART），发展了横穿孔缺陷的超声兰姆波层析成像方法。

A converging through hole CBV is provided, which has better flow stopping performance and the lower fabricated difficulty.

提出一种收缩形通孔微阀，具有更好的流动控制性能，并且制作难度大大降低。

Through hole forming method, the hole sealing technique, hole cutting hole anti-reflection technology improvement, improve to the drilling effect.

并通过成孔方式、封孔技术、掏穴钻孔增透工艺的改进，提高了下向钻空效果。

Reason of Produce Haloing on Through Hole of the PCB

印制板通孔上晕圈产生的原因

The Analysis of the Plating Defects of Plated through Hole of the Multi-layer Printed Circuit Board and Countermeasures

多层印制板金属化孔镀层缺陷成因分析及相应对策

In each graphite column there is a through hole in which a technological channel is placed.

在每个石墨列有一个通孔，其中一个技术通道上。

Reliability of plated through hole ( PTH) has close relationship with technology parameters during manufacture process.

镀通孔的可靠性与制造过程工艺参数有非常密切的关系。

Elevation view of through hole.

通孔的正视图。

Could you tell me the price different between micro via PCB and through hole via PCB?

你能告诉我微过孔电路板与穿透式过孔电路板价钱的差别吗？

Ultrasonic Lamb wave tomography of through hole flaws in isotropic thin plates

各向同性薄板中横穿孔缺陷的超声兰姆波层析成像

Strange Magnetic Particle Pattern over the Cylindrical Surface of a Pin with a Through Hole

带通孔销钉圆柱面上的奇特磁痕

Feed electrical wires of new switch assembly through hole in rear of housing.

从壳后将新的开关总成的火线穿过壳上的孔。

Through hole high speed power chuck

中空式高速动力卡盘

As the improvement, the material loading plate is provided with a through hole.

作为改进，在载料板上开有通孔。

APPLICATION OF BALL ROLLING TECHNIQUE TO THE PROCESS OF CYLINDER through hole rotating oil cylinder

滚珠滚压工艺在油（气）缸缸筒加工中的应用中空式高速回转油缸

Expansion Chamber Type Sound-insulating Structure at Shaft Through Hole

轴孔扩张管隔声结构

The Research of Fuzzy Control On Through Hole and Vertical Pit Heating Furnace

通孔井式加热炉模糊控制研究

A Simple Open Hole Process of Pipe System Phase Pass Through Hole

一种简便的管系相贯孔开孔工艺