Historically, the primary source of lead emissions has been the result tetraethyl lead additives to gasoline.

Chapter 3 introduces the variable time-step scheme in combination with solution-mesh refinement on unstructured tetrahedral mesh.

第三章介绍结合变时 步法 之非结构性可调适四面体网格.

An algorithm for generating three-dimensional tetrahedral mesh for simulation of brain deformation is presented.

本文提出了一种用于模拟脑组织变形的三维四面体网格划分算法.

The Rubik's is a toy in the shape of a tetrahedron.

魔方是个四面体的玩具.

Tetrahedron sandstone statues tower, the existing four, descending, were folded pyramid.

四面体砂岩造像塔, 现存4块, 由大到小,呈塔形叠起.

The internal structure of silica has a pyramid ( tetrahedron ) unit .

硅的内部结构是一个 四面体.

The catalysis of big pore strong acid resin for 1, 4-butanediol dehydration to tetrahydrofuran is investigated.

考察了大孔强酸性树脂对1, 4 丁二醇 脱水制四氢呋喃的催化作用.

Removal alcohol from crude tetrahydrofuran, formation principle of peroxidate and antioxidation technique were introduced.

介绍了粗品四氢呋喃的除醇技术, 过氧化物的生成机理与抗氧化技术.

The catalysis of big pore strong acid resin for 1,4-butanediol dehydration to tetrahydrofuran is investigated.

考察了大孔强酸性树脂对1,4 丁二醇 脱水制四氢呋喃的催化作用.

Methods: The mobile was Tetrahydrofuran-acidic water, UV detector was used to quantify and determine Sudan I.

方法: 以四氢呋喃 - 酸性水溶液为流动相, 紫外检测器测定.

The new synthetic route for tetrahydrofuran via direct oxidation of butadiene was introduced.

介绍以丁二烯为起始原料、经乙烯基环氧乙烷制备四氢呋喃的新工艺.

Tetrahymena is applied for detecting toxicity, apoptosis and water quality monitoring at present.

目前已作为标准检测生物被广泛应用于毒性检测 、 细胞凋亡和水质检测中.

Clinic research of one stage surgical treatment of Tetralogy of Fallot in infants.

与婴儿法洛四联症一期根治的临床研究>>相似的文献.

Cultured tet + B cells produced antibodies specific for epitopes of the tetramer antigen.

培养的四聚物阳性B细胞产生大量针对四聚物抗原的表位抗体.

A catalectic tetrameter of iambs marching.

节奏完全按四音步句的抑扬格在行进.

Prediction of self-care outcome of patients with tetraplegia is far more complicated.

对四肢瘫病人的自理结果预测要复杂的多.

The invention relates to a cultivation method of the tetraploid dendrobium officinale.

本发明涉及一种铁皮石斛四倍体的培育方法.

ZnO whisker , the only tetrapod among all kinds of whiskers, possesses good comprehensive properties.

氧化锌晶须是一种立体四针状单晶体微纤维, 其原料来源广泛,成本低廉.

Herod the tetrarch heard the reports about Jesus.

那时,分封的王希律听见耶稣的名声.

John was beheaded by Herod the tetrarch.

施洗约翰是耶稣的开路先锋.

Drag onto the page to add a tube tetrode with directly or indirectly heated cathode.

拖到绘图页后,可以添加具有直热式或旁热式阴极的电子管四极管.