The pulg has characteristics of removable, setting precision, preventing block and preventing adhesion,and can build multiform plugging pipe, which can solve the problem above and reduce the venture of ash squeezing and plugging,thus saving the work time.
该桥塞具有可取、坐封准确、防卡、防粘等特点,并形成了多种井下封堵管柱,能够解决挤水泥封堵过程中出现的上述问题,并且降低了挤水泥封堵风险,缩短了施工周期。
The success or failure of well testing operation is determined by setting situation of the slip-type packer or not.
卡瓦封隔器能否坐封直接决定测试施工的成败。
Study of envelope materials used to seal up field equipment;
野战装备封存封套材料研究
Light thermal environment and surface heat current analysis of envelope;
封套的光热环境与表面热流影响因素分析
The variation of temperature and relative humidity in a new type of envelope by PVC/CPE materials was studied in typical area.
选取一种CPE改性PVC封套,对其在典型地区环境下的内部环境温湿度变化规律进行了试验研究。
Calculational Methods of Dryer s Dosage in Protective Envelop;
封套封存中干燥剂用量的计算
Performance of envelop material is the key to equipments sealing technology in battlefield.
研发性能优异的封套材料是装备集合封存技术成败的关键,为了适应封存对象的不同要求,防静电性能是封套材料一项重要指标。
So we must consider the difference of object in design of the envelope in order to improve its practicability.
野战弹药封存是一项复杂的系统工程,涉及到弹药技术特性、储存地区环境、封存作业条件等各种因素,在封套等封存装置的设计制作中体现目标差异,从而提高实用性,是一个必须予以考虑的问题。
retrievable hydraulic-set casing Packer
可收回的液压坐封套管封隔器
An envelope or wrapper for mail.
封套，信封为邮寄而制的信封或封套
wireline packer setting
电缆操作封隔器坐封
multistring hydraulic-set packer
多管水力坐封封隔器
packer setting control line
封隔器坐封液压控制管
hydro-set permanent packer
永久式水力坐封封隔器
water-seal latrine unit
(成套)水封式厕所
wireline pressure setting assembly
电缆工具压力坐封装置
hydraulic-set dual hanger
水力坐封双管悬挂器
the closed boats paddled from a sitting position with a double-blade paddle.
即封闭的、坐式双桨比赛，
BUSHINGS SEATED IN BOOTS
坐落在防尘套中的轴瓦
phonograph records were sold in cardboard jackets.
唱片装在封套里出售。
encapsulated fuel unit
加密封套的燃料元件
BALL JOINT SEAL BOOT
球形接头密封防尘套
tamper evident valuable property envelope
防干扰贵重财物封套
fasten(the cover,flap,etc of sth)with glue,paste,etc
（用胶水、浆糊等）粘住（封套、信封口等）
He opened the cover in which the message was enclosed.
他把密封那份电报的封套拆开。
book [ dust ] jacket
(套在书藉外面可以取下的)外封套