The specimen is loaded by a SHPB system, using which static tensile load is appiled to the specimen and maintained before applying the dynamic load.

【翻译】此样本由一个SHPB系统加载，通过采用该系统，静态拉伸载荷在施加动态负载前，就已应用于该样本中，并保持不变。

【分析】which 是关系代词，指代a SHPB system；using which  在定语从句中作“方式状语”，是by using which 的省略说法。

但是，我认为这种表达不符合语法要求。关系代词which 之前可以使用介词by，但不可以使用using。改正的办法是：

The specimen is loaded by a SHPB system, and by using the system static tensile load is appiled to the specimen and maintained before applying the dynamic load.

【注意】using which 和by using which 的用法（which 是关系代词，指代前文中的某个词语），在科普英语中偶尔可以见到。例如：

The approach of raising steam pressure and vacuum degree was selected, by using which the production ability was increased with 30%.

确定采用增加蒸汽压力和提高真空度方法，可提高生产能力30%左右。

A test data compression scheme based on fixed and variable length coding(FAVLC) is presented, by using which the test data can be compressed efficiently.

文章提出了一种混合定变长码的测试数据压缩方案，该方案可以有效压缩芯片测试数据量。

Related parameters may be calculated according to the requirements of the enameling process and the theory of enamel melt flow, by using which right die sizes can be selected.

通过漆包线生产工艺对涂漆的要求及漆液流动理论，可以计算出相关的参数，并合理选择配模尺寸。

The peculiarity of design is that the upper part of the mouse is mobile, unlike normal mice, using which the arm is in a slightly twisted position.

设计特点是，鼠标上部可以运动，与正常鼠标不一样，使用稍微扭曲的活动臂。

But let me share some of the best ways using which you can find a problem. I’m going to let you know the two ways which I use and one of them is quite new.

但是我现在想要分享一些发现问题最好的方法，包括我本人使用的两个方法，其中之一是比较新的。

It establishes a framework using which a SOE can be realized as opposed to a design paradigm.

它建立的框架，可供SOE实现，而不仅是设计范式。

By imaging the standard grid template, we can obtain the imaging-sys-tem's parameter, using which we can calibrate the acquired image and reestablish the original scene.

通过对标准模板成像得到成像系统的参数信息，并利用此参数信息对获取的图像进行校正，从而达到原始场景重建的目的。