以前也有人建议我看国标就OK，但是我们主管非要我翻译ASTM，我是学生物技术的，对于ASTM 简直就是外行，多谢各位的帮助！

The vise in the photo at 5/F is a common tool called 台钳, while the vise in this ASTM is a component of the test machine (see the photo at 8/F) used to hold (to clamp) the test specimen in position. I suggest that the term “vise” here could be translated as 夹具.

反向切口埃左德******
Izod后面还有内容吧 例如Izod impact test 埃左德冲击试验

定位钳钳口？？

定位钳、样品及打击沿面间的相互关系---检测方法E？？？

It is more common to translate “notch” as 缺口 in mechanical engineering (see GBT229 金属夏比缺口冲击试验方法 Charpy notch impact test).

Technical terms sometimes have special meaning and unique translation, for example, “jaw” in mechanical engineering is often translated as 爪 (the jaw of caliper = 游标卡尺的量爪) although its literal meaning in ordinary dictionary is 颚 or 颌.

It is not difficult to understand what is “Fixed vise jaw”, but it is difficult for me to translate it into proper Chinese as I am not a mechanical engineer.

就是啊，fixed vise jaw实在很难翻译成中文，不知道怎么翻译才妥当

夹具之固定爪 ?

夹具之固定钳口 ?

LZ可以在网上用BAIDU搜索一下啊，很快可以找到的

又发现新问题拉，请大家帮帮忙
ASTM D256有两处地方不知如何翻译才妥当
mandatory information
nonmandatory information
请问这两处怎么翻译呢？