查询词典 precursor

This may be a precursor of what astronomers refer to as the common envelope phase, a short-lived period of a binary star's existence that is thought to last for just a few thousand years.

这可能是天文学家们提到的共包层阶段的前身，这是双星生命中的短期阶段被认为仅持续几千年。

Arachidonic acid is an essential fatty acid in human nutrition and a biogenetic precursor of the biologically active prostaglandins and leukotrienes.

花生四烯酸是人体的必需脂肪酸，具有独特的生物活性。

Then the muzzle flowfield with muzzle brake was simulated with the aforementioned experience. Those complex phenomena including precursor shock caused by quickly moving of projectile, muzzle flow structure produced by propellant gases, affection of blast wave behind muzzle area which formed by leading angle of muzzle brake, etc, can be observed clearly by these simulations.

同时藉由此经验，模拟含炮口制退器之炮口流场，获得炮管内因弹体高速移动产生之先导震波现象、高温高压之发射药气体於炮口形成之喷流结构及制退器排气导孔对后方震波压力传导之效应等良好结果。

The scholar to study the ancient geomantic books is precursor from the know the magnetite, use it to guide to the compass come into being. We couldn't gainsay their contribution just because they blazon forth the geomantic theoretics.

从对磁石基本情况的认识到用来指向，从发明指南针到发现磁偏角，堪舆学者都是里面的先驱者，尽管他们所宣扬的风水理论中确实存在着许多封建迷信的东西。

A large cell of the bone marrow that is a precursor of the mature ''.

髓细胞骨髓的一种大型细胞，是血液成熟的有''。

A large cell of the bone marrow that is a precursor of the mature granulocyte of the blood.

髓细胞骨髓的一种大型细胞，是血液成熟的有粒细胞的前身

The bore-hole water temperature observation is a main earthquake precursor observation method of geothermal observation network .

井孔水温观测是地热观测网中主要的地震前兆观测方法。

The desulfurization over different metal boride s and the choices of suitable nickel salt precursor and amount of reducing reagent were conducted.

研究了噻吩类型硫在金属硼化物上的原位还原深度脱硫。

Nanosized titania particles consisting of anatase, rutile and brookite phases were synthesized under solvothermal conditions with different alcohols as solvents, hexamethylene tetramine as precipitant as well as precursor of titanium trichloride.

采用不同的醇溶剂，以六亚甲基四胺为沉淀剂，以TiCl3为前驱体，通过溶剂热的方法控制合成出纳米级的锐钛矿型、金红石型和板钛矿型的二氧化钛。

I wonder if this thing buzzing around is a precursor to that.

我怀疑现在身旁嗡嗡叫的这只就是它的前兆。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。