由分子组成的

Polycarbosilane lower the electronic structure and properties of PCS is a kind of high-molecular compound, the main chain by alternating silicon and carbon atoms of the silicon and carbon atoms are connected to hydrogen or organic group, molecular chains of linear or branch structure.

低聚碳硅烷的电子结构及其性质的研究聚碳硅烷是一类高分子化合物，其主链由硅和碳原子交替组成，硅和碳原子上连接有氢或有机基团，分子链为线形或枝化结构。

Basically, the equation says: To produce two molecules of water (H2O), two molecules of diatomic hydrogen (H2) must be combined with one molecule of diatomic oxygen (O2) and that energy will be released in the process.

一个水分子由2个氢原子和1个氧原子组成。然而，我们不能简单的将2个氢原子和1个氧原子结合起来。实际上制取水的反应稍微有点复杂：2H2 + O2 = 2H2O + Energy。

The wood structures of Lauraceae were characterized by most diffuse porous; most pores solitary, less multiple and cluster pores; simple and scalariform perforation with few bars; most solitary pore; alternate intervessel pitting; most of rays multiseriate, less uniseriate; all of rays heterogeneous, mostly heterogeneous Ⅲ and Ⅱ type rays; most of axial parenchyma paratracheal type, less banded or marginal type; oil cell and mucilage cell in axial parenchyma cell or ray cell; mostly fiber tracheid and libriform fiber, less septate fiber.

结果表明：除檫木外，其它木材的管孔分布均为散孔材，具较高的单孔率；导管分子穿孔板兼有单穿孔和梯状穿孔2种或者仅具有单穿孔；导管间纹孔式为互列；导管－射线间纹孔式类型丰富，主要为刻痕状和大圆状。木射线有单列和多列射线2种类型，单列射线稀少、短，多列射线数量多；射线组织主要为异形Ⅲ和异形Ⅱ；轴向薄壁组织以傍管状为主，少数有带状或轮界状。油细胞和粘液细胞普遍存在于射线薄壁细胞或轴向薄壁细胞中。木纤维由韧性纤维和纤维管胞组成，部分树种具分隔纤维。

Two new discreate structure polyoxometalate compounds of [Co_4O_4_4(CH_3COO)_2]_2V_4O_(12)·5H_2O (4) and [Co_3]_2·V_4O_(12)_16.5H_2O-C_8H_6O_4 (5) were synthesized.

品体(4)由两个[Co_4O_4_4(CH_3COO)_2]~(2+)单元和一个分立的分子簇[V_4O_(12)]~(4-)组成，这是首次利用水热合成法合成出来的Co_4O_4化合物。

Four fractions of OTPS was obtained by DEAE-52 column chromatography, and there were obvious differences not only in contents of neutral sugar, uronic acid and protein of OTPS, but also in inhibiting effects on hydroxyl radical

获得的乌龙茶多糖主要组分OTPS2-1是富含糖醛酸和少量蛋白质的三元糖复合物，相对重均分子质量为8.877 10^4，糖基由半乳糖、葡萄糖、阿拉伯糖、岩藻糖和鼠李糖组成，其摩尔比为

The morphological characters of all taxa in the matsutake group were analysed under phenetic classification and cladistic classification which contains Fitch, Wagner and Dollo parsimony criterions.

本文由松口蘑群的形态学数量分类研究、分子系统学研究、生物地理学研究和单种描述四个部分组成。

With an HOH angle of 105 Results in the side with the hydrogen being positively charged whereas the other side is negatively charged.

水分子是由具有105°角的氢-氧-氢组成，其形状导致有氢的一边显正电荷，而另一边显负电荷。

The shape of the water molecule, with an HOH angle of 105. Results in the side with the hydrogen being positively charged whereas the other side is negatively charged.

水分子是由具有105°角的氢-氧-氢组成，其形状导致有氢的一边显正电荷，而另一边显负电荷。

That is what when at least 400 armed tribesmen formed a civilian army, commonly called the a " lashkar," and started attacking Taliban militants and in several villages.

那是由至少400名武装的部落村民组成了一只通常称为&拉什卡&平民部队在几个村庄里攻击塔利班武装分子。

That is when at least 400 armed tribesmen formed a civilian army, commonly called a "lashkar," and started attacking Taliban militants in several villages.

由至少400个武装的部落成员组成了平民的军队，通常叫做&虔诚军&，他们在一些村庄里开始攻击塔利班武装分子。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。