选择性的

The molybdenum-based multiphasic oxide catalysts were prepared and tested in the selective oxidation of isobutylene to methacrolein reaction.

研究了添加不同助剂对钼基复合氧化物催化剂对异丁烯选择性氧化制备甲基丙烯醛反应的影响。

It was there that selective breeding was first successfully used to develop jet-black and, later,"silver" foxes.

正是在那儿首次成功采用选择性养殖方式，培育发展了油黑狐狸以及后来的"银白"狐狸。

Pyrolyzing the kenaf core s directly,a new kind of absorbent with superior selectivity and high sorption capacity to oil was obtained.

以红麻杆为原料，经热解处理制备出选择性亲油和高吸油量的吸油材料。

Pyrolyzing the kenaf cores at 250℃~500℃ directly, a newkind of absorbent with superior selectivity and high sorption capacity to oil was obtained.

以红麻杆为原料，经250℃-500℃热解，制备出了选择性亲油和高吸油量的吸油材料。

Kerria lacca likes to feed on annual branch or younger branch, and the diameter of fed branch ranges from 0.47cm to 1.60cm.When foraging, Kerria lacca has no priority to orientation of branches, but has priority to specific spot on branch bark.

紫胶蚧选择在1年生及以下枝条上固定取食，取食枝条枝径的范围在0.47~1.60cm之间，紫胶蚧分布时对枝条伸展方向无偏向，对取食部位存在选择性。

Objective To study the effect of chitosan in the prevention of fibrous scar formation in the epidural space after laminectomy.

目的 观察选择性脊神经后根切除术椎板切除后硬膜外几种防瘢痕粘连物质的作用并探讨其机制。

AbstractObjectiveTo study the effect of chitosan in the prevention of fibrous scar formation in the epidural space after laminectomy.

摘要目的观察选择性脊神经后根切除术椎板切除后硬膜外几种防瘢痕粘连物质的作用并探讨其机制。

Cry1Ab is selectively active to Lepidoptera, therefore

Cry1抗体对鳞翅累是有选择性作用的，因此

Materials and Methods:The clinical and imaging characteristics of 74 cases with mammary hyperplasia were analyzed retrospectively.

材料和方法：回顾性分析74例乳腺增生症的临床和影像学表现。74例均做了钼靶X线摄影检查，其中19例做了选择性乳腺导管造影、10例超声检查和3例核磁共振检查。

The chemical modified carbon paste electrode is made up of carbon power, manganese dioxide and silicone oil II.

二、直接电位法测定水中H_2O_2 本文提供了一种不需活化，具有良好线性范围和灵敏度的过氧化氢选择性电极。

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％。