当气缸向后运动时，拉动活塞向后，料缸前腔产生负压。
When the cylinder moves backward, the piston is driven to travel backward and generates negative pressure in the front chamber of the cylinder.
第二，成套轴承在装配前经过严格的精密选配。不能互换使用锭脚型腔内的其它零件。
Second, the complete bearing undergoes the strict precise match before the assembly. Cannot exchange in the use spindle foot die space other components.
非常有趣的是，发育中的哺乳动物晶胚的心脏在分化为四腔室前，与斑马鱼的双腔心脏非常相似。
Intriguingly, before the heart of a developing mammalian embryo separates into four Chambers, it looks similar to the two-chambered zebrafish heart.
安装前必需清洁阀门内腔， 不允许有任何杂物和污垢附着。
The body must be cleaned before installed and there is no dirt and sundries clinging to the body.
为了减少收缩和塌陷，在填充前可以用气体给模具加预压，或者可以在非表观面与型腔表面之间注入气体。
For shrinkage and sink reduction, molds can be pre-pressurized with gas before melt is injected, or gas can be introduced between the non-appearance side of the part and the mold.
从左到右依次排列着粥样硬化的左冠状动脉的前降支从近端到远端的横断面，左边的近端冠状动脉内腔更狭窄，粥样硬化更严重。
These cross sections of the left anterior descending coronary artery demonstrate more pronounced atherosclerosis with narrowing at the left, which is the proximal portion of this artery.
于支架植入前、植入后1周及6 ~9个月期间，分别对患者的气道狭窄段腔径、气促指数及肺功能进行测定，以评价金属支架植入疗法对改善患者肺通气功能的效果。
Before stenting and 1 week, 6 ~ 9 months after stenting, the lumen of stenosis segment, Borg index and pulmonary function were measured to evaluate the improvement of ventilation function.
安装前必须清洁阀门内腔，不允许有任何杂物和污垢附着。
Before installation, clean stomach of valve, not allow any sundries and dirt attaching it.
该球阀阀前、阀后阀座都能密封，即所谓双向密封特性，利用自带的排放阀，阀体中腔可向外排放。
The ball valve before the valve can be closed after the valve seat, the so-called two-way sealing characteristics, the use of built-in discharge valve, the valve body cavity may be out emissions.
同时发现室旁核、室周核、室周弓状核及视前大细胞核的VP阳性神经元有突起伸入到第三脑室室管膜或突出于脑室腔，视上核的VP阳性神经元也有突起投射至脑基底神经胶质板上或伸至蛛网膜下腔。
The process of VP-like cells in PVN, PN, AN and POM projected towards the third ventricle, and the process in SON towards the glial lamina in the basal surface of the brain or subdural space.
应用神经内镜直接自单鼻腔进入，暴露双侧蝶窦开口，打开蝶窦前壁进入蝶窦腔切除肿瘤。
A endoscope was used to open the anterior wall of the sphenoid sinus and resected tumors.
落砂前铸件在型腔里停留多长时间？
在奇静脉弓平面，奇静脉弓淋巴结和主动脉上隐窝位于上腔静脉、奇静脉弓、气管和主动脉凹面所围成的气管前间隙内。
At the level of azygos vein, 100% of the lymph nodes of azygos vein and the superior aortic recess were located among the superior vena cava, arch of azygos vein, trachea and concavity of aortic arch.
停止前应首先停止加料，待破碎腔内的破碎物料全部排出后，方可关闭电动机。
Should stop feeding in raw material at first before parking, after the broken supplies in broken are all discharged, can shut off the motor.
分别用冠状动脉ct、造影和IVUS检查测量其pci前靶血管管腔直径，三者差异无统计学意义。
Coronary CT, CAG and IVUS were used to measure the diameter of target vessel before PCI, and no statistically significant difference between these examinations was found.
目的探讨关节腔灌洗术治疗早期颞下颌关节不可复性盘前移位临床疗效。
Objective This clinical study is aimed to discuss the treatment and its prognosis of arthocentesis for acute TMJ disk displacement without reduction.
安装前请检查内腔有无杂物附着，否则会堵塞u型阀芯或损坏阀件。
Check the valve if there is lumber inside the body, which will block the valve cartridge or damage the parts.
主要原因：金属液在填充型腔前凝固或木勺舀取料不足。
MAIN CAUSE: metal is frozen before the cavity is filled or by insufficient metal being ladled.
燃烧室的最高壁温出现在凹腔前壁面下部或凹腔上壁面中部；
The hot spot temperature of combustor appeared in the lower of fore-wall or in the middle of upper-wall.
燃烧室的最高壁温出现在凹腔前壁面下部或凹腔上壁面中部；
The hot spot temperature of combustor appeared in the lower of fore-wall or in the middle of upper-wall.
应用推荐