植株灌木型，茎多分枝，可长至50厘米高或更高，茎干8到15毫米粗，淡绿色，有白霜，近根处色深暗，叶痕呈双凸形。
Plant shrubby, caudex branching, to 50 cm tall or more, 8-15 mm thick, pale green and glaucous above, darker below, leaf scars lenticular.
本文对某型机零件表面出现锤痕现象进行了技术分析，发现其锤痕原因是由于成形零件用榔头校形而造成。
This paper has analyzed the hammer traces occurred on the part surface for X Aircraft model, it is concluded that the causes of hammer trace are resulted forming-calibrated of forming parts by hammer.
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