查询词典 stem

The sample switch is installed such that the direction of switch operation is vertical and, upon depression of the stem in its center the whole travel distance ,the force of the stem to return to its free position shall be measured.

开关的动作方向垂直放置开关，在已有行程的推柄中心向上减小压力，推柄回到自由位置时所测量到的力

RESULTS:① Morphological observation of bone marrow-derived mensenchymal stem cells: Primary rabbit bone marrow-derived mesenchymal stem cells could cover the Petri dish fully in 7 or8 days and could passage stably.

主要观察指标：①骨髓间充质干细胞的形态学观察。

It is connected to the required position of drilling stem to protect drilling stem without any influence on the drilling tool.

将它连接于所用钻柱的需要部位，保护钻柱，不影响钻具正常工作，一旦在井下工具遇卡可借助于安全接头卸开并退出卡点以上的钻柱，再次下钻时还可对接。

It is connected to the required positoin of drilling stem to protect drilling stem without any influence on the drilling tool.

将它连接于所有钻柱的需要部位，保护钻柱，不影响钻具正常工作，一旦在井下工具遇卡可借助于安全接头卸开并退出卡点以上的钻柱，再次下钻时还可对接。

It is connected to the required position of drilling stem to protect drilling stem without any influence on the drilling tool.

将它连接于所用钻柱的需要部位，保护钻柱、不影响钻具正常工作，一旦在井下工具遇卡可借助于安全接头退出并卸开卡点以上的钻柱，再次下钻时还可对接。

The predominant pathogens of maize ear rot and maize stalk rot , Fusarium graminearum and Fmoniliforme, could cause the two diseases by reciprocal infection, and could reach ear from the basal part of stem through stem pith and external dissemination separately.

玉米穗、茎腐病病原学的相互关系研究表明：其优势致病菌禾谷镰孢菌和串珠镰抱菌均可交互侵染引起这两种病害，并且能从植株的外侧和内部由基部向穗部传染，初步证实引起穗腐病的镰孢菌是来自茎腐病的镰孢菌。

The hematopoietic system was reconstituted and the chimaeras were formed.The results showed that hematopoietic stem cells coming from ES-D3 cells could reconstitute the mice following high dose chemotherapy in vivo. This research offers theories for HSCs induced from embryonic stem cells supporting the high dose chemotherapy of cancer.

将鉴定的造血干细胞移植入大剂量化疗的C57BL/6鼠，观察造血重建功能并证明有嵌合体形成，从体内实验方面证实了ES-D3细胞来源的造血干/祖细胞移植能够重建接受大剂量化疗小鼠的造血功能，为胚胎干细胞来源的造血干细胞支持大剂量化疗提供了实验依据。

MethodsThe vessel elements in stem were observed by educts of stem's secondary xylem under biomicroscope.

运用生物显微镜对茵陈蒿次生木质部离析材料进行观察。

It was typically indirect effect that the following variations induced in the progenies of endosperms implanted by heavy ion beams were discovered. 1 In comparison with control, there were very high differences in biological trait, anti-oxidation enzyme activity, MDA content and protein content, chromosome aberration rate and micro-nucleus rate in M1 generation. 2 Shorter stem variants and purple stem mutants were analyzed by RAPD and AFLP. The analytic results showed that the sequences of their DNA were changed, so those variations were not physiological damage only. And there were differences among M2 generation plants of the same sort of variants or mutants, it was indicated that M2 generation may be in disjunction.

M1代的生物学性状、幼苗的抗氧化酶活性、MDA含量、蛋白质含量和染色体畸变率及微核率等发生了较大的变化。2）对其矮杆变异株和紫色茎杆突变体（M2）做RAPD和AFLP分子鉴定等研究，结果显示了矮杆变异体和紫色茎杆突变体的DNA序列发生了改变，而非仅仅产生生理损伤；同一种变异体或突变体，在M2代单株间也存在着明显的差异，表明它们可能还处于分离状态。

Stem packing are generally Check Valves close to the cold box in the stem wall of the filler tank.

阀杆填料一般都在阀杆紧贴冷箱壁处的填料槽内。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷