tetract四射海绵骨针tetran.脂鲤（南美产的热带鱼）pref.四；四原；四基tetrahydroxy acid四羟基酸Tetracyclosqualene四环鲨烯Tetraploid sorghum四倍体高粱Tetrachloromathane四氯甲烷, 四氯化碳[驱肠虫药]tetrazonocolporate四环孔沟的tetrahydrothiazole四氢噻唑tetraxishexahedron四六面体tetrachlorethylenen.四氯乙烯tetragonal crystal正方晶体,四方晶体tetrahydromagnolol四氢厚朴酚

1. An improved method for the preparation of pentaerythrityl tetramine was reported.
   提出了一种制备季戊四胺硫酸盐的改进方法。
2. Transition metal complexes of hexamethylene tetramine are synthesized by solid state reaction and their thermochromism is investigated by TG-DSC spectra.
   摘要研究了六次甲基四胺的过渡金属配合物的固相合成及其热色性。