您要查找的是不是：
- 低不透X线性 low radiopacity
- 低不透X线性，X线上片低密度 low radiopacity
- 高活性低不饱和度聚醚多元醇的精制 Purification of Polyether Polyols with High Activity and Low Unsaturated Degree
- 非吸收性不透X线造影剂，非吸收性阳性造影剂 nonabsorbable radiopaque medium
- 他这个人在工作上高不成，低不就。 He is a man who is unfit for a higher post but unwilling to take a lower one in his work.
- 不透X线性 radiopacity
- 低不饱和度聚醚多元醇制备聚氨酯弹性体 Polyurethane Elastomer Prepared with Lower Unsaturation Polyether Polyols
- 不透X线染料 radiopaque dye
- 高活性低不饱和度聚醚 polyether with high activity and low unsaturation degree
- 监狱里不透光的窗户；X光不能穿透的。 opaque windows of the jail; opaque to X-rays.
- 低不饱和度聚醚多元醇伯羟基含量的提高 Increase of Content of Primary Hydroxyl Groups of Polyether Polyols with Low Unsaturation
- 气管、支气管可透X线异物的X线诊断 Analysis of X-ray manifestation of foreign body which invisible with X-ray in trachea and bronchus
- 不透X线橡胶 X-ray rubber
- 双金属氰化物催化剂合成低不饱和度聚醚 Low unsaturation polyether synthesized by bimetallic cyanide complex catalysts
- 不透X光的输尿管导管 catheter for x-ray, ureteral
- 他这个人高不成, 低不就，不会成就大事业。 He is too choosy to succeed.
- 高相对分子质量低不饱和度聚醚多元醇技术进展 Technical Progress and Advance in Polyether Polyols with Low Unsaturation and High Molecular Weight
- 不透X线造影剂，阳性造影剂 radiopaque contrast medium
- 高相对分子质量低不饱和度聚醚的合成与性能研究 Study on Synthesis and Properties of High Relative Molecular Mass and Low Unsaturation Polyether Polyols
- 完全不透X线性 high radiopacity
