常形

肉瘤细胞有明显的多形性，常呈梭形。

Sarcomas have very pleomorphic cells , often with a spindle shape .

动物实验发现压缩髓内针固定较坚强，使骨折稳定，骨折血肿较小，X线显示外骨痂相应地较小、形状较规则，常呈梭形；

In the animal experiments treated with the compressive intramedullary rod , it has been found that the internal fixation thus obtained is more solid and stable , and the fracture hematoma is smaller .

常绿植物的叶常是针形的

The leaves of evergreens are often shaped like needles .

圆柱形工件外表面镀铬常采用圆桶形阳极。

Cylindrical anodes are conventionally used for chromium plating on surface of cylindrical articles .

常是梨形琴身，在有格纹的琴颈上装有几组供挑拨的琴弦。

An instrument with a usually pear-shaped body and a fretted neck over which several pairs of strings are stretched .

蠕变常速度下筒形结构分析

Analysis of tube with constant creep rate

在该系统中，针形阀I常闭，针形阀常开。

In this system , I often close the needle valve , needle valve is always open .