查询词典 presence

The influence of exogenous acetaldehyde solution on the vase life of two carnation (Dianthus caryophyllus L.) cultivars in the absence or presence of exogenous ethylene.

Horticultural Abstracts 2002 Vol.72 No.6 5689新西兰研究外生乙醛溶液对两种香石竹品种在外采乙烯和不含有乙烯条件下对其瓶插寿命的影响。

Indeed, the presence of diatomic gases (eg H 2 , N 2 ) in the products is generally desirable simply because the heat of formation of these gases is zero.

事实上，在场的双原子气体（如与H 2 ，的N 2 ）在产品通常是可取的，纯粹因为热的形成，这些气体是零。

Rare missense mutations were found in the Dicer and Drosha genes, but their presence or absence did not correlate with the level of expression.

Dicer 和Drosha基因检查却几乎没有发现错配的变异，但是无论出现或不出现变异都与表达水平无关。

Thus, our results indicated that the expression of Dicer could be inhibited by anti-Dicer shRNA expression vectors, and that the expression silencing activity of shRNA expression vectors is dependent on the presence of Dicer enzyme.

结果表明，抗Dicer基因shRNA表达载体，能够明显抑制Dicer基因的表达；shRNA表达载体的功能发挥需要Dicer酶的直接参与。

The restaurant's striking appearance - of a glass box floating effortlessly above a shaped landscape - owes its diaphanous presence to an innovative materials palette of high-tech glass that includes colored inner layers, dichromatic and translucent films, and ceramic fritting.

这个餐厅有打动人的建筑形象：一个玻璃盒子轻松地漂浮在一个人工景观体上。这种通透的轻盈感觉要归功于创新的高技彩色玻璃（由内层涂色、双色的半透明薄膜和陶土烧结片技术提供变化的色彩）的使用。

Do you think Dickinson used s to achieve a special effect, or is their presence merely coincidence?

你认为狄更生使用"s"是为达到特定的效果，还是仅仅是一种巧合呢？

Whenever Her Majesty gives an order it is considered an Imperial Edict or command and all servants are required to kneel when any command is transmitted to them the same as they would if in Her Majesty's presence, Then they told us to follow them and we went through another left gate to another courtyard laid out exactly the same as the former, except that the Ren Shou Dien is situated on the north side and the other buildings were a little larger.

任何时候皇帝下的命令都被认为是圣旨，传达谕旨的时候所有的人都必须跪拜就像皇上就在他们面前一样。然后我们跟着他们穿过左边的门来到另一个庭院内，这里除了大殿在左边，其他的建筑稍微大一点之外，布局和前一个庭院几乎是一样的。

According to people who had moustaches, inhaling the air component quantitative analysis and found that the air sucked into the presence of dozens of hazardous substances, including phenol, toluene, acetone, isoamyl asked diene, and other carcinogens,, Who had moustaches, who inhaled the air pollution index, is 4.2 times that of ordinary air.

据对留有胡子的人吸入的空气成分进行定量分析，发现吸进的空气中含有几十种有害物质，其中包括酚、甲苯、丙酮、异戊问二烯等多种致癌物，留有胡子的人吸入的空气污染指数，是普通空气的4.2倍。

In the first part work,we developed a new method for measuring the effective diffusion constant oftwo-dimensional electrons in the presence of magnetic field.

在第一部分中，我们提出一种测量强磁场下二维电子气有效扩散系数的新方法。

The results show that the nonlinear diffusive phenomenacaused by frictional damping is also true in the presence of boundaryeffects.

以往的结果（[50]）是该结果的一个特例，所用方法已被推广用于解决多孔介质中的可压缩流方程组的初边值问题（[43]）。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐