铸钢阀门锤击手轮，阀座环，楔形闸板。
可能他们最初找到的是生铜，把它锤击成形。
Possibly they first found native copper and hammered it into shape .
锤击试验时，要考虑的最重要的事情是什么？
What are some of the most important things to consider when impact testing?
鼓手需要一个非常舒适的踩锤击打鼓皮的感觉。
The drummer needs to be comfortable with the feel of the beater hitting the head.
那么，在大多数情况下，他不会受到任何锤击铁钉。
例如，棒料的直径可以通过加热和轴向锤击而增大。
For example, the diameter of a bar can be increased by heating and hammering axially.
进行锤击试验使用窗函数时，非常小心是极其重要的。
It is extremely important to be very careful when using the exponential window when performing an impact test.
桩的可打性研究需要模拟桩的锤击，计算出桩顶的应力波。
The drivability study of piling requires modeling of the hammer impact to calculate the input force wave at the pile head.
第一，很多双击是由锤击试验的新手或者不熟练人员造成的。
First, many double impacts occur due to new or inexperienced impact testers.
试验分别采用正弦激励模态共振法和锤击激励传递函数测量法。
The resonance method excited by sine sweeping and the transfer function method excited by hammer impact are adopted.
问题在于，在结构的主要共振频率上锤击力谱常常具有显著的降落。
The problem is that often the impact spectrum will have significant drop out at the major resonances of the structure.
锤击试验另一个比较重要的测试注意事项是关于预触发延迟必要性的。
Another somewhat important test consideration for impact testing relates to the need for pretrigger delay.
它是一种啄木鸟，可以锤击树木，喜欢在地面上觅食，往往掘地来寻找蚂蚁。
Flickers are woodpeckers that can hammer trees but prefer to forage on the ground. They often dig in the dirt for ants.
通常压力都是以由如图4.1所示的动力锤或压力机提供的锤击形式出现。
Usually the compressive force is in the form of hammer blows using a power hammer or a press, as shown in Fig. 4.1.
一套只需用长柄锤击打铁板就能起作用的新设备，正被用于发现塌方事故中的被困矿工。
Indeed, a proposed new system for finding miners trapped by an underground collapse is activated simply by hammering on an iron plate with a sledgehammer.
对随焊锤击的研究进行了深入的分析，提出了可调随焊锤击系统总体设计方案。
The paper analyses the study of welding with trailing peening, then brings up the total design project of an adjustable system of welding with trailing peening.
本文介绍了广州某工程锤击沉管灌注桩动测和静载试验及工程质量事故处理情况。
Introduced the dynamic testing and static bearing test of pour-pile for striking tube which use for GuangZhou Development Zone, quality accident manage.
为了获得模型的柔度特性、频率、阻尼等进行了脉动试验、自由振动、锤击试验等。
The model was subjected to pulsation, vibration, free vibration and hammering tests in order to investigate its flexibility, frequency and damping characteristics.
数值模拟结果表明获得的预成形H/D最佳尺寸可明显减少模锻锤击次数和模具磨损。
Numerical simulation results show that the optimal preform H/D dimension thus obtained can greatly reduce hammering times and die wear.
对于高度超过头部，操作困难的闸阀、截止阀和角阀，可以采用巴氏可调节锤击链轮。
The babbitt adjustable Hammer-Blow Sprocket Rim is for use with hard to operate gate, globe and Angle valves in overhead locations.
对于高度超过头部，操作困难的闸阀、截止阀和角阀，可以采用巴氏可调节锤击链轮。
Rim is for use with hard to operate gate, globe and Angle valves in overhead locations.
上图：1990年6月2日，一名东德边防士兵看着一名男子锤击盟军查理检查站附近的一处柏林墙。
Top: an East German border soldier looking at a man hammering a section of the Berlin Wall near the Allied checkpoint Charlie on June 2, 1990.
文中采用的锤击力振动梁测量系统测试动弹性模量快速、简便，并有较高的精度和可信度。
The method for determing the dynamic modulus adopted in the present experiment was found not only simple and convenient, but also highly precise.
本文介绍电液伺服系统的几种动态测试方法，包括随机噪声测试，锤击法测试和扫频测试。
In this paper several dynamic testing methods of electrohydraulic servo systems are introduced, including stochastic noise test, hammering test and sweep frequency test.
在几次到位的锤击后，水管裂开，水喷溅了出来，房间和Michael一伙都浸在了水中。
After a couple good blows, the pipe splits and water sprays out, soaking the room as well as the team.
典型情况是，要么当进行激振器激励时激励位置固定，要么进行锤击试验时加速度位置固定。
The reference location is typically either the fixed excitation location when performing a shaker excitation or the stationary accelerometer location when performing an impact test.
典型情况是，要么当进行激振器激励时激励位置固定，要么进行锤击试验时加速度位置固定。
The reference location is typically either the fixed excitation location when performing a shaker excitation or the stationary accelerometer location when performing an impact test.
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