查询词典 cm.

In addition, aerodynamic roughness of stubble field increased with the increasing of stubble height, until the heights reached 15, 30, 15 cm for naked oats stubble, oilseed rape stubble and wheat stubble, respectively.

同类作物不同高度的留茬覆盖下，地表空气动力学粗糙度随留茬高度的增加而增大，在莜麦、油菜和小麦茬高度达到15、30和15 cm时显著增大，是3种留茬防风的有效高度。

To provide scientific suggestions on soil nutrient management and balanced fertilization in Harbin city,Geostatistics method and Geographic Information Systems were introduced to study soil spatial heterogeneity in Deshan village in Fangzheng county.51 soil samples at the depth 0～20 cm were collected from a 50 hm2 stubble field,and the soil properties that organic matter,total N,total P,total K were analyzed.

利用地统计学和GIS相结合的方法分析了哈尔滨市方正县德善村土壤养分有机质、全氮、全磷、全钾空间变异状况。采集土壤表层0~20 cm土样51个，面积约50 hm2。

SMTs lying in inside submucosa under 2 cm in diameter were performed endoscopic resection, and no complications.

其中MPS诊断位于黏膜下层以内的直径＜2 cm的良性病变有9例采用内镜下治疗，无并发症发生。

Suboccipital retromastoid approach is suitable for giant petroclival meningioma. Total tumor removal should not increase neurological impairment; if radical dissection is impossible, the tumour may be reduced to less than 3 cm in diameter so as to achieve good results of postoperative radio therapy.

枕下乳突后入路手术，在不加重神经功能损伤的前提下，应尽量争取肿瘤全切除；如不能全切除，应缩小瘤体≤3 cm，以利术后放射外科治疗，可能是较为安全有效的治疗方案。

Level of serum total cholesterol and triacylglycerol of patients in the plaque group was in a normal range (4.45±0.98),(1.36±0.60) mmol/L superior limit of mon carotid artery of patients with or without plaque in thyroid: Frequent zone was 10 cm/s or so in the wider ones and all with sound window.

有斑块组患者的血清总胆固醇、三酰甘油水平均处于正常范围内[(4.45±0.98)，(1.36±0.60)mmol/L(正常值上限：5.2 mmol/L；2.25 mmol/L)]。③甲状腺段颈总动脉有无斑块患者的频谱参数：频带较宽为10 cm/s左右，都有声窗。

The gene responsible for congenital sutural cataract in a Chinese pedigree is located at chromosome 3q21.1-q26.2 within a 38.6 cM region.

先天性缝合状白内障家系的致病基因位于3号染色体3q21.1-q26.2约38.6 cM区域内。

Thirty patients who had CM-I associated with syringomyelia and who underwent FMD participated in the study.

30名CM－1型伴脊髓空洞型以及行枕骨大孔减压术的患者参与了研究。

The resistivity of the polysilicon films could be controlled under different dopant concentration and different anneal temperature. The changes of resistance with the temperature were measured. The temperature coefficient of resistance value was about 1‰ when the boron concentration was 5X 10 /cm and the anneal temperature was 900℃.

2制作了不同掺硼浓度和退火温度的多晶硅电阻，测试了阻值随温度的变化，在掺硼浓度和退火温度分别为5×10~(14)/cm~2和900℃时得到了接近1‰的TCR值。

A new making process of PTC small sensors is introduced and technological focal points in operations are detailed PTC small sensors (2 mm×2 mm×0 3 mm)with Curie temperature 120 ℃,resistivity at room temperature about 100 ohm·cm, temperature coefficient of resistance above 15%℃-1 ,rate of rise of resistivity ρ max /ρ min above 10 3 and time constant below 2 seconds have been made by use of new technology of isohydraulic formation, chip cut and scratch.

介绍了一种新的微型PTC元件的制造工艺，并对各个工序的技术重点做了详细阐述。作者采用等静压成型和切片、划片新工艺制成2mm×2mm×0.3mm微型PTC元件，其居里温度为120℃，室温电阻率为100Ω·cm，升阻比ρmax／ρmin大于103，电阻温度系数α≥15％℃－1，时间常数小于2s。

When y＝0.15, the tenability at 10kHz is as high as 35.4% under a relative low electric-field (2.0kV/cm).

当y＝0.15时，在较小的直流偏压下（2.0kV/cm），10kHz下的电场可调度最大可达到35.4％。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。