孔

The stress propagation feature and effective area of gas drainage by blasting action were analyzed in the soft coal bed with the control holes.

分析了松软煤介质深孔爆破在有控制孔时应力波传播的特点和因爆破作用的抽放影响区域。

Grout must be supplemented in time to ensure the gap between soil and pipe to be stuffed.

注浆工艺的合理性对管道顶进施工的顺利实施有重要的意义，并就注浆工艺的改进提出了以下要点：及时补充压浆，力求使地层与管道结构间的缝隙始终由浆液密实充填；及时调整注浆压力，力求使其与管段所在位置的水土压力值相等；注浆孔在管段横剖面上均匀布设，以使注浆压力沿管道周边均匀分布；对位于顶进管道前端的数节管段，宜每节都设注浆孔，使可及时注浆和补浆。

The location of sound hole has slight effect on the pitch.

四、音孔位置与对音高亦有些微影响，在相同组合面积的条件下，开放与气窗同侧或相邻的音孔，会产生较低的频率。

The point is very important for a normal tone , which is that you should keep breath of your sound hole, otherwise, the sound you blow is not exact and it was harsh for audience.

按孔部位 part of press hole 要吹出一个正常的音，有一点是必需做到的，凡要求关闭的音孔是不能漏气的，一丝都不能漏，否则，发出的音则不准确，让人感觉刺耳不实在。

The home-made 7-hole with wider sound range through hole arrangement was tested and found with no significant difference between actual and theoretical sound scales.

五、自行研制七孔配孔指法而得到音域较广的陶笛，经检定结果得知，其实际与理论音阶分布无显著差异。

A simulation experimental bench of fixed air sparger oxidation equipment was established.

进行了曝气器开孔直径、表观气速及孔排布置方式等因数对固定空气喷射器式氧化装置性能影响的试验研究。

Machining the spark plug hole and counter bore at a compound angle.

加工火花塞孔与反孔的复合角度。

I made the electron bundle pass a bored-out spherical condenser with fine-meshed spherically shaped grids fixed over each end of the bore.

我让电子束通过一个钻了孔的球形聚光镜。孔的两端分别固定了球面形细网。

The experimental results showed that the better round the pore-forming agent's shape, the higher degree of sphericity of the holes and the less decrement of the bending strength and hardness.

通过实验发现：造孔剂的粉末形状、造孔剂与金属结合剂的密度差都对结合剂的力学性能有直接的影响。

From the results, it is found that,(1) decreasing the angle between the air slot and the spinneret axis both the air velocity in the direction of the spinneret axis and the air temperature will be increased.

测试和模拟结果表示：(1)气流流道与喷丝孔轴线的夹角越小，喷丝孔轴线方向的气流速度越大，气流温度越高，但受结构设计的限制。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。