why does this have to be an optional extra and not part of the basic package?

1、

the car radio is an optional extra.

汽车上的收音机是可选择的额外配件.

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2、

it introduces a type of dry cutting diesel engine valve pcbn tool.

介绍了一种干切削柴油机气阀的PCBN刀具.

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3、

noninvasive arterial oxygen saturation detection method is based on the principle of photoelectric detection. this method detects the fluctuations in blood volume due to changes in the amount of light absorbed, and eliminates the impact of non-blood tissue oxygen saturation degree ( spo2).

无创动脉血氧饱和度检测方法是基于光电检测原理，通过检测光线通过血管，光线减弱后光吸收量的变化，并且消除其他干扰的影响求得血氧饱和度（SpO2）。

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4、

one week later, the daily sputum volume within the first week, the oxygen saturation ( spo2) without oxygen inhalation and the% of predicted value of forced expiratory volume in one second ( fev1%) were compared.

对两组1周内日排痰量及1周后不吸氧情况下的SPO2以及FEV1%预计值进行比较。

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5、

bronchoscopy was performed immediately and the dlt position was corrected 15 minutes after dependent lung ventilation in the lateral position or in case of ineffective lung separation or spo2 declination to below 90%.

侧卧位后行非术侧单侧肺通气15min时，以及术中发生肺隔离效果不佳或脉搏血氧饱和度

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6、

the time when consciousness loss and recovery occurred, dosage of propofol for anesthesia maintenance, mean arterial blood pressure ( map), heart rate ( hr) and oxygen saturation ( spo2) were recorded.

记录麻醉意识消失和苏醒时间、丙泊酚维持麻醉用量和平均动脉压（MAP）、心率（HR）、脉搏氧饱和度（SpO2）。

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7、

methods thirty-four patients with hypertension and 22 patients with coronary heart disease were inspected by endoscopy under the general anaesthesia, and their blood pressure, ecg, and spo2 were observed.

方法观察34例伴发高血压病、22例伴发冠心病的患者在进行无痛胃、肠镜检查时血压、心电图、SpO2等指标的变化。

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8、

the effectiveness of analgesia, the duration and mode of delivery, the fetus heart rate ( fhr), the apgar scores and spo2 of newborns were observed.

观察其镇痛效果、产程时间、分娩方式、监测胎心率（FHR）、新生儿阿氏评分和SPO2。

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9、

objective: to explore reliability in these 3~ 6 months old patients with cleft lip undergoing taxis by spo2 and to estimate the tolerance and reliability of patients during taxis.

目的：以SpO2评估3～6月先天性唇裂患儿唇裂整复术的安全性。

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10、

记录患者相关临床指标包括：睡眠呼吸暂停和低通气指数（AHI），夜间平均血氧饱和度（SpO2）。

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11、

circuit nurses should observe patients' breath and spo2 carefully, supply oxygen continuously, pay attention to the procedure of operation and function of monitoring system and supply necessary articles.

巡回护士严密观察患者的呼吸、血氧饱和度，手术过程中持续供氧，密切观察手术进程、显像系统的正常运作、清晰度，及时供给手术台上的所需物品。

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12、

data was received through the serial port. the pulse, rri and spo2 data in accordance with the time point were obtained after decoding using established protocols.

通过串口接收到的数据，按照既定协议进行解码后，得到对应时间点的脉搏、RRI及SPO2数据。

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13、

the pulse oximeter is a device that allows non-invasive measurements of the saturation of haemoglobin with oxygen ( spo2);

脉博血氧测定仪是一种允许非侵入式携氧血红蛋白状态的测量方法的仪器；

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14、

conversely, when a patient hypoventilates whilst breathing room air, spo2 will fall.

相反，当病畜处于低通气量，同时呼吸室内空气时，SpO2会下降。

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15、

the ecg, blood pressure, spo2 and amount of urine were inspected during the operations.

术中监测心电图、血压、血氧饱和度、尿量。

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16、

it is important to note that spo2 only indicates that the patient is receiving enough oxygen;

应注意SpO2仅仅表明病畜获得了充足的氧气；

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17、

the blood pressure, pulse and spo2 of the two groups were all in the normal scopes.

产程中两组产妇血压、脉搏、SPO2均在正常范围之内。

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18、

the measurement and application of spo2

血氧饱和度的测量原理及应用

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19、

in these circumstances, spo2 gives no information about adequacy of ventilation.

在这些情况，SpO2不会提供通供通气充足的信息。

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20、

the changes of spo2 in 30 children with intravenous anesthesia were observed.

本文对30例小儿静脉全麻病人进行了SpO2观察。

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