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when necessary
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  需要时
     By job control, operators can operate many jobs at the same lime and change different jobs when necessary.
     使用作业控制,用户可以同时运行多个作业,并在需要时在作业之间进行切换。
短句来源
     [Conclusion]Both the two methods are accurate in determining manganese in Chinese white wine; microwave - dispelling method can be applied for the determination when necessary.
     结论两种前处理方法测定白酒中锰的精确度和准确度都较好,需要时可以利用微波消解样品处理系统进行实验。
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     The proposed platform is open and incremental so that it is easy to be extended when necessary.
     平台结构是开放的、增量式的,需要时很容易扩展。
短句来源
     Methods: Temperature controller and relative circuits were used in the water bath for calefaction and heat preservation with temperature adjusting when necessary.
     材料与方法:采用温度控制器和相关电路实现水浴的加热和保温,需要时温度可调节。
短句来源
     All parameters of the VR museum auto-building system are stored in a data base. It can design VR scenes at any time and link to any other programs when necessary.
     虚拟博物馆自动生成系统的各个参数均存储在数据库中,需要时可以随时设计博物馆的虚拟场景并与其他应用程序挂接。
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  必要时
     FR FSE T_2WI and SE T_1WI-C~+ can be used as supplement when necessary;
     必要时可使用FR FSE T2WI和SET1WI-C+作为补充;
短句来源
     The cases in group A received intravenous injection of 15 ug/kg fentanil plus 0.5mg/kg propofol or with a supplementation of 10~20mg propofol when necessary.
     A组 15例 ,静注芬太尼 0 .5 μg/kg ,丙泊酚用量~ 1mg/kg ,必要时追加 10~ 2 0mg。
短句来源
     The supervision engineers or the engineers of controlling quality in an overall contract should control effectively concrete quality from slection of material, mixing ratio, mixing, concreteness, maintainance and so on, decide quality when necessary using methods of concrete resiliometer, core and so on, rates synthetically to concrete itemizing project, prevent producing quality problems.
     监理工程师、总承包质量控制工程师应从原材料的选择、配合比、拌制、浇筑、养护等环节有效控制混凝土的质量 ,必要时可采用混凝土回弹仪、取芯等方法进行质量判定 ,对混凝土分项工程综合进行等级评定 ,防止出现质量问题
短句来源
     Methods QTd、JTd were measured from the 12 lead ECG in 52 patients after onset of AMI. The right percordial lead and V7~9 lead were recorded when necessary, QTd and JTd was calculated according to QTd=QT max -QT min ,JTd=JT max -JT min .
     方法 在发病 48h内、第 7天、第 2 1天分别对 5 2例病人行 12导联心电图检查 ,必要时加做右胸及V7~ 9导联 ,按QTd =QTmax-QTmin,JTd =JTmax-JTmin计算。
短句来源
     2. Prove and enhance relationship with customer , or establish strategy alliance when necessary;
     2.完善并加强客户关系壁垒,必要时可建立战略联盟;
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  “when necessary”译为未确定词的双语例句
     when necessary , bolus dosage was 0.5 ml with 15 min lock out time and 2 ml/h background infusion for the patients of group RL and RF.
     RL和RF组以2ml/h硬膜外腔持续注入,疼痛时由病人补充镇痛剂量每次 0.5ml,锁定间隔时间 15min。
短句来源
     Methods 97 patients were induced with midazolam 0.1~0.3mg/kg , fentanyl 3~5μg/kg and vecuronium 0.1mg/kg ; were maintained with fentanyl 30~40μg/kg and vecuronium 0.1mg·kg-1·h-1 . Vasoactive drugs were used introperatively and postperatively when necessary to support the circulation.
     方法97例心脏瓣膜病变患者,麻醉诱导采用咪唑安定0.1~0.3mg/kg、芬太尼3~5μg/kg、维库溴铵0.1mg/kg诱导,麻醉维持用芬太尼30~40μg/kg、维库溴铵0.1mg·kg-1·h-1。 术中、术后适量给予血管活性药物支持循环功能。
短句来源
     A section thickness of 0.8-1.0cm and a gap of 1.2-2.0 mm in all cases. All images were obtained with a matrix of 128×128, 131×256, 150×256, 160×256, 176×256, 179×256,respectively. MR scan with axial sections was conducted in every case and coronal was added when necessary.
     选用层厚8—10mm,间隔1.2mm-2.0mm,矩阵分别为128×128、131×256、150×256、160×256、176×256、179×256。
短句来源
     Methods This series included 42 suspected cases of prostatic cancer with increased PSA and 5 control subjects with bladder cancer. PET/CT imaging was performed 5min after injection of the tracer 11C-choline,7. 4 MBq/kg in supine position, covering the pelvis, and the whole body when necessary.
     方法42例PSA升高的可疑前列腺癌患者为研究组,5例浸润性膀胱癌患者为阴性对照组,静脉注射7.4 MBq/kg 11C-胆碱5 min后行仰卧位盆腔PET/CT显像,可疑转移者行全身显像。
短句来源
     The injection group received intravenous injection of 2mg/kg propofol with addition of 20-50mg propofol for each time at intervals during anesthesia when necessary.
     静注组静脉推注异丙酚2mg/kg,间断追加每次20~50mg。
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  when necessary
Instead, it should be applied by percutaneous transangiography (PTA) only, which may be repeated when necessary.
      
Here, a most efficient way seems to be the Bayesian approach, realized, when necessary, by Monte Carlo simulations of the counting results.
      
We also bring quantum mechanical electronic structure methods to bear when necessary.
      
When necessary, clinical and laboratory investigations were performed.
      
Basic support includes clearing of upper airways, keeping the airways patent and establishment of artificial ventilation when necessary.
      
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The change of rice cropping systems alters the environmental conditions essential to the multiplication and survival of rice stem borers, resulting in a conspicuous difference in the annual number of generations, the temporal position of the population peaks and the degree of infestation. The development of the original single late rice cropping to double and triple cropping from partiality to totality in the region caused a corresponding change of the pest status from light to severity and then from severity...

The change of rice cropping systems alters the environmental conditions essential to the multiplication and survival of rice stem borers, resulting in a conspicuous difference in the annual number of generations, the temporal position of the population peaks and the degree of infestation. The development of the original single late rice cropping to double and triple cropping from partiality to totality in the region caused a corresponding change of the pest status from light to severity and then from severity to light. Evidently the degree of borer infestation is closely related to the numerical changes of the populations aad the coincidence of the vulnerable developmental stages of rice plants and the appearance of newly hatched larvae. Our field experience in the past a few years has shown that suppression of borer populations to a low level can be achieved by adopting rational cropping systems, increasing the uniformity of. the rice varieties planted in one region, improving field management by proper watering and manuring to promote healthy and uniform vegetative growth and applying insecticides in a restricted manner when necessary.

水稻栽培制度的变革,改变了稻螟赖以生存的环境条件,导致二、三化螟的发生世代、发生型和为害程度发生了深刻的变化。本地单季晚稻区从开始发展双三熟制,到双三熟制稳定在100%的过程,螟害为由轻到重,由重到轻。显然,螟害程度的轻重,与稻螟的发生型以及水稻危险生育期是否与大量蚁螟活动期相配合有关。几年来的实践表明,采用合理的耕作制度:进一步提高良种纯度,加强田间肥水管理,促使稻株生育健壮,抽穗整齐:必要时再辅以少量药剂:确能控制稻螟的种群,使它稳定在低密度状态。

In our recent work of simulating the chemical process of polymerization by matho-matical models,problems involving Flory distribution and its moments of different orders have been frequently encountered. The object of this paper is to derive a general formula to evaluate the sum of the series wherein N may be any positive integer.This result will be feasible for auy given N,and can be translated into computer program when necessary. First of all,by mathematical induction a set of identities may be proven.??...

In our recent work of simulating the chemical process of polymerization by matho-matical models,problems involving Flory distribution and its moments of different orders have been frequently encountered. The object of this paper is to derive a general formula to evaluate the sum of the series wherein N may be any positive integer.This result will be feasible for auy given N,and can be translated into computer program when necessary. First of all,by mathematical induction a set of identities may be proven.?? making use of the given identities yields?? Thus we finally arrived at the general formulation? where α_n~N satisfies some recursion relations and can also be expressed in a triangular array.

最近我们在成纤高聚物反应工程数学模拟研究过程中,多次碰到Flory分布高阶统计矩的问题——级数?的求和.本文目的在于得到一个N为任意正整数的通式,对于任何N均可直接套用,而且这个结果也可作为一个不难实现的计算机用算法.首先用数学归纳法证明一组恒等式然后令藉助上述恒等式可得(公式)因此式中a_n~N符合一组递推关系,并可简明地表为三角阵.

The blood vessels of 26 right and24 left anterior pectoral flaps of 37Chinese male--adult cadavers collectedin Chengdu district were dissected andmeasured after an ordinary embalmingand color latex injection. Emerging from the first intercostalspaces, Rami perforantes of thearteriae thoraciae internae (RPATI) Ⅰpossess the highest means of theirdiameters both while piercing the deepfascia (0.98±0.31mm) and beforeentering pectoralis major (1.16±0.31mm) Besides, among the RPATI theyalso supply blood the most extensivelyin...

The blood vessels of 26 right and24 left anterior pectoral flaps of 37Chinese male--adult cadavers collectedin Chengdu district were dissected andmeasured after an ordinary embalmingand color latex injection. Emerging from the first intercostalspaces, Rami perforantes of thearteriae thoraciae internae (RPATI) Ⅰpossess the highest means of theirdiameters both while piercing the deepfascia (0.98±0.31mm) and beforeentering pectoralis major (1.16±0.31mm) Besides, among the RPATI theyalso supply blood the most extensivelyin area of the upper 4 ics. Thefrequency of appearance of the largestRPATI in the first ics. is also thehighest (65.6%). Therefore, it seemsreasonable to conclude that RPATI Ⅰis the main artery of the anteriorpectoral flap. As a rule, the diameter of RPATIentering pectoralis major is larger thanthat penetrating the deep fascia. Inorder to obtain an artery of largercaliber, it is advisable to cut the fasciaand split the muscular fibers and takethe vessel from a deeper site, andsometimes, resect the correspondingcostal cartilage and cut the arterialpedicle at its root when necessary. Most of RPATI pierce the deepfascia within approximately 1 cm. fromthe border of the sternum, abreast withcorresponding superficial veins (notthe venae comitans) which are alsosuitable for anastomosis. 2 cases whose upper part of theflap has an unusual arterial origin arealso described in this paper.

作者测量50例胸前供皮区的胸廓内动脉第1~4前穿动脉及其伴行的浅静脉的管径、长度和分布;观察了其穿过深筋膜的部位及动静脉的位置关系;计算了最大穿动脉出现于各肋间隙的百分率等。

 
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