2,4-D是什么意思

用法例句

Central leaves of Saccharum sinense(sugar cane) Strain Yu Tang 95-168 was used as the material,and cultured on MS medium containing 2,4-D at 1.

以甘蔗粤糖95-168号心叶为材料,分别在添加2,4-D1。

The finite-element model of transient temperature field for hollow blade during laser rapid forming (LRF) process was developed.

建立了空心叶片激光快速成形过程温度场瞬态有限元数值模型,模拟了TC4钛合金空心叶片激光快速成形过程的温度场演变过程。

A transient temperature/stress field finite-element model for the laser rapid forming(LRF) process of a hollow blade of aeroengine is developed.

采用随动强化及米塞斯屈服准则进行了热弹塑性分析,通过间接耦合模拟了TC4钛合金空心叶片激光快速成形的温度场/应力场演变过程。

mprovement and the principle of a holding mechanism for complex ceramic core die of aero-engine hollow blades was described.

途述了某发动机空心叶片陶瓷型芯模具夹紧机构的改进及原理分析。

Optimizing design method for centrifugal impeller its engineering application and numerical simulation;

离心叶轮优化设计法应用与全三维数值模拟

Numerical evaluation of inner flow passing low-speed centrifugal impeller;

低比转速离心叶轮内部流动的数值计算

Principles for selecting design factors of centrifugal impeller;

离心叶轮设计系数选用原则

Necrosis Pathotype Induced on Nicotiana glutinosa by Infection of CMV-CB7 Related to RNA2;

黄瓜花叶病毒CB7株系引起心叶烟坏死反应与RNA2相关

The antiviral properties of extracts from fifteen plants were tested for inhibiting Tobacco mosaic virus(TMV) by inoculating Nicotiana glutinosa at two different stages,i.

从预防(施用提取物24小时后接种病毒)、治疗(施用提取物24小时前接种病毒)两个不同时期接种心叶烟,测试了15种植物提取物对烟草花叶病毒(Tobacco mosaic virus,TMV)的抑制作用。

Average numbers of localized necrotic lesions on half leaf of Nicotiana glutinosa under different temperature treatment were investigated.

在不同温度处理下,测定了心叶烟(Nicotiana glutinosa)接种烟草花叶病毒(Tobacco Mosaic Virus,TMV)后生成的枯斑数。

The effect of the contour of flow passage on gas-particle flow in centrifugal impeller;

离心叶轮流道型线对气固两相流动的影响

The characteristic of the integrated impeller blade structure and its failure mode is presented.

述及了整体离心叶轮的结构及其故障模式特点,在强迫振动放大系数模型的基础上提出了离心叶轮叶片的振动可靠性分析方法,结合固有频率灵敏度分析的叶片共振相干分析,通过厚度控制来调整整体叶轮叶片的固有频率,控制强迫振动放大系数使之避开危险性共振或强迫振动,给出了一实际算例,算例及试车试验表明本文方法是有效的。

Unsteady flow in centrifugal impeller has been measured by mean of PIV.

利用激光成像速度仪 (PIV)测量了旋转离心叶轮内部的非定常流场。