Tries to think of something to say but draws a blank, heart rate increases.
试着考虑自己应该说什么但是脑子里一片空白心跳加速。
The turbine body is cast blank, which complicated shape and high accuracy rate bring certain difficulty for machining.
蜗轮壳体为铸造毛坯，形状复杂，加工精度高，给机加工带来了一定的难度。
Vessel areas rate, vessel density and resin vascular cast of HEr group, model group and blank group are got. Results are compared.
得灯盏细辛组、模型组和空白对照组的血管截面积比值、血管密度值等数据以及颊囊微血管树脂铸形标本， 作观察对比。
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