无影响的

SnAgCu lead-free solder powders were prepared by close-coupled gas atomization. The effects of gas atomization pressure and melt superheat on the powder size and morphologies were investigated.

摘 要：采用紧耦合气雾化法制备SnAgCu无铅焊料合金粉末，研究雾化压力和熔体过热度对粉末粒径和形貌的影响。

NaF can induce significant increase of micronucleus frequency in eripheral erythrocytes of Zebrafish. Neither transgenic CryIA cotton seed powder nor regular cotton seed powder has obvious effect on micronucleus frequency in eripheral erythrocytes of Zebrafish.

腹腔注射氟化钠可以诱导斑马鱼外周血红细胞微核率的显著升高；转CryIA基因抗虫棉棉籽粉粉和普通棉棉籽粉粉一样，对斑马鱼外周血红细胞微核率无明显影响。

Because there is not feedback equipment between the engine to the worktable in lathe with open or half-open loop system,its machining precision is influenced by the manufactured precision of itself and human′s programming and operating greatly.

采用开环及半闭环系统的数控车床由于从驱动电机到机床工作台之间无反馈装置，其加工精度受机器本身制造精度及人为编程、操作影响较大。

The effects of different kinds of ecological restoration (alfalfa fallowing, natural vegetation restoration, and cropping) and fertilization management (chemical fertilizer + organic manure, chemical fertilizer + straw, chemical fertilizer application, and no fertilizer application) on the physical properties of degraded black soil were investigated.

研究了不同生态恢复方式（苜蓿休闲、自然恢复、种植作物）和不同施肥管理（化肥＋有机肥、化肥＋秸秆还田、化肥、无肥）对退化黑土物理性状的影响。

The paper was conducted to discuss the chemical herbicide which could effectively control the weeds in field without influencing Angelica gigas growth.

［目的］为了探讨既对红花生长无明显影响又能有效防除红花田杂草的化学除草剂。

Research conclusions: The main influencing factors on design of rail fastenings for ballastless track are rigidity, insulation property, rail height and gauge adjustment ability.

研究结论：影响无碴轨道扣件设计的主要因素是合理刚度、绝缘性能和钢轨高低、轨距调整能力，可按节点静刚度25～50 kN/mm，钢轨高低调整量不小于30 mm，轨距调整量-10～＋10 mm，道床电阻不小于3Ω·km进行扣件设计。

Early hypoxemia does not show obvious negative impact on short-term mortality of patients.

肺切除术后低氧血症对患者手术死亡率无明显影响，术后早期ICU干预治疗可能是减少手术死亡率的原因之一。

The present study investigated the effects of a specific COX-2 inhabitor(NS-398) and a selected PPARγagonist on the proliferation and apoptosis of pancreatic cancer SW1990 cell line to examine whether the two non-celltoxicity agents have synergistic anticancer role, so as to establish the experimental bases for application PPARγagonist associating with specific COX-2 inhabitor in treating pancreatic cancer.

本课题研究特异性COX-2抑制剂NS-398和PPARγ激动剂罗格列酮对人胰腺腺癌细胞系SW1990增殖、凋亡的影响，旨在明确两种非细胞毒性药物对胰腺癌有无协同抗癌作用，为临床联合应用特异性COX-2抑制剂和PPARγ激动剂防治胰腺癌提供实验依据。

No effect was found of lidocaine on the production of IL-1β in the two groups.

利多卡因对正常组IL-1β的分泌无明显影响。

The master programmer moves from map to map without fear. No change in start point can harm him. He will not be fired, even if the contest is canceled. Why is this?

星际大师从一张地图转到另一张地图而豪无顾虑，任何出生点上的变动都不能影响他，他不会被解雇，即使比赛被取消了。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。