1) Required head
必需水头
2) essential
[英][ɪ'senʃl] [美][ɪ'sɛnʃəl]
必需
1.
Analysis of the Principle-″essential, adequates″Elementary theory knowledge in HVTE;
对高职基础理论知识“必需·够用”的思辨
2.
Methods The four essential fatty acids of cord and venous blood on the 14th day after birth were measured in 16 breastfed and 12 formularfed full term normal delivered babies by gas chromatography.
目的 探讨不同喂养方式对新生儿必需脂肪酸水平的影响。
3) net positive suction head required
必需净正吸上压头
4) required net positivesuction head
必需的净正吸入压头
5) necessity
[英][nə'sesəti] [美][nə'sɛsətɪ]
需要必需品
6) Essential groups
必需基团
1.
The essential groups of three N acetylglucosaminyltransferases(GnTs) of rat kidney were studied by using chemical modification and substrate protection methods.
用化学修饰法和底物保护法研究了大鼠肾脏３种Ｎ－乙酰氨基葡萄糖转移酶（ＧｎＴ）的必需基团，发现氨基和吲哚基为ＧｎＴ－ＩＩ、ＧｎＴ－ＩＶ和ＧｎＴ－Ｖ共同的必需基团，其中氨基可能参与和共同供体底物ＵＤＰ－ＧｌｃＮＡｃ的结合，吲哚基对ＧｎＴ－ＩＩ和ＧｎＴ－ＩＶ可能是受体底物——七糖糖链Ｇｎ２Ｍ３Ｇｎ２－ＰＡ的结合基团，而对ＧｎＴ－Ｖ可能是不参与底物结合的必需基团。
补充资料：梳水头
见假发。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条